分类目录归档：模拟

CSP 202009-2 风险人群筛查

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#include <iostream>
#include <algorithm>
#include <map>
#include <cstdio>
#include <cstdlib>

using namespace std;

int n,k,t,xl,yd,xr,yu;
int x[1005], y[1005];
bool visited,stayed;

inline bool checkCoord(int posx,int posy){
return xl<=posx&&posx<=xr&&yd<=posy&&posy<=yu;
}

void checkPerson(){
visited = stayed = false;
int cnt=0;
for(int i=0;i<t;i++){
bool flag=checkCoord(x[i],y[i]);
if(!flag)cnt=0;
else cnt++;
if(cnt>0)visited=true;
if(cnt>=k){
stayed=true;
break;
}
}
}

int main() {
ios::sync_with_stdio(false);
cin>>n>>k>>t>>xl>>yd>>xr>>yu;
int vis=0,stay=0;
for(int i=0;i<n;i++){
for(int j=0;j<t;j++){
cin>>x[j]>>y[j];
}
checkPerson();
vis+=visited;
stay+=stayed;
}
cout<<vis<<"\n"<<stay<<"\n";
}

CSP 202009-1 称检测点查询

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#include <iostream>
#include <algorithm>
#include <map>
#include <cstdio>
#include <cstdlib>

using namespace std;

int n,posx,posy;
struct s{
int dist2;
int id;
bool operator < (const s& s2) const{
if(dist2!=s2.dist2)return dist2 < s2.dist2;
return id<s2.id;
}
}arrS[1000];
inline int calDist(int posx,int posy, int x, int y){
return (posx-x)*(posx-x)+(posy-y)*(posy-y);
}
int main() {
ios::sync_with_stdio(false);
cin>>n>>posx>>posy;
for(int i=1;i<=n;i++){
int x,y;
cin>>x>>y;
arrS[i].dist2=calDist(posx,posy,x,y);
arrS[i].id=i;
}
sort(arrS+1,arrS+1+n);
for(int i=1;i<=3;i++){
cout<<arrS[i].id<<"\n";
}
}

CSP 202012-3 带配额的文件系统

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import copy

file_template = {
"isDirectory": False,
"fileSize": 0,
"childSize": 0,
"childQuota": 0,
"descendantQuota": 0,
"descendants": {}
}
root_directory = {
"isDirectory": True,
"fileSize": 0,
"childSize": 0,
"childQuota": 0,
"descendantQuota": 0,
"descendants": {}
}

def filepath_resolver(filepath: str):
fpArr = filepath.split('/')
fpArr.pop(0)
return fpArr

def visit(filepath):
if filepath == '/':
return root_directory
fpArr = filepath_resolver(filepath)
fileIter = root_directory
try:
for file in fpArr:
fileIter = fileIter["descendants"][file]
except KeyError:
return None
return fileIter

def checkQuotaLimit(fileIter, filesize, descendants = True, child = True):
if descendants:
if fileIter["descendantQuota"] != 0: # 检查后代文件配额
if fileIter["fileSize"] + filesize > fileIter["descendantQuota"]:
return False
if child:
if fileIter["childQuota"] != 0: # 检查孩子文件配额
if fileIter["childSize"] + filesize > fileIter["childQuota"]:
return False
return True

def create(filepath, filesize, isDirectory = False):
dstIter = visit(filepath)
update_filesize = filesize
if dstIter is not None:
update_filesize -= dstIter["fileSize"]

fpArr = filepath_resolver(filepath)
fileIter = root_directory
for i in range(len(fpArr)):
file = fpArr[i]
if file not in fileIter["descendants"].keys(): # 无该目录/文件
curFile = copy.deepcopy(file_template)
if i != len(fpArr) - 1: # 非末端文件
if not checkQuotaLimit(fileIter, update_filesize, True, False): return False
curFile["isDirectory"] = True
else: # 末端文件
if not checkQuotaLimit(fileIter, update_filesize): return False
curFile["isDirectory"] = isDirectory
curFile["fileSize"] = filesize
fileIter["descendants"][file] = curFile
else: # 存在该目录/文件
curFile = fileIter["descendants"][file]
if i != len(fpArr) - 1: # 非末端文件
if not curFile["isDirectory"]: # 欲进入的新目录文件与普通文件重名
return False
else:
if not checkQuotaLimit(fileIter, update_filesize, True, False): return False
else: # 末端文件
if curFile["isDirectory"] != isDirectory: # 欲创建的同名新文件与旧文件类型冲突
return False
else: # 文件已存在，替换文件大小
if not checkQuotaLimit(fileIter, update_filesize): return False
curFile["fileSize"] = filesize
fileIter = fileIter["descendants"][file]

fileIter = root_directory
for i in range(len(fpArr)):
file = fpArr[i]
fileIter["fileSize"] += update_filesize
if i == len(fpArr) - 1:
fileIter["childSize"] += update_filesize
fileIter = fileIter["descendants"][file]
return True

def remove(filepath):
fpArr = filepath_resolver(filepath)
dstIter = visit(filepath)
if dstIter is None:
return True

fileIter = root_directory
for file in fpArr:
fileIter["fileSize"] -= dstIter["fileSize"]
if fileIter["descendants"][file] == dstIter:
if not dstIter["isDirectory"]:
fileIter["childSize"] -= dstIter["fileSize"]
break
fileIter = fileIter["descendants"][file]
fileIter["descendants"].pop(fpArr[-1])
return True

def quota(filepath, child_quota, descendant_quota):
dstIter = visit(filepath)
if dstIter is None:
return False
if not dstIter["isDirectory"]:
return False
child_flag = child_quota == 0 or dstIter["childSize"] <= child_quota
descendant_flag = descendant_quota == 0 or dstIter["fileSize"] <= descendant_quota
if child_flag and descendant_flag:
dstIter["childQuota"] = child_quota
dstIter["descendantQuota"] = descendant_quota
return True
else:
return False

def main():
n = int(input())
for loop in range(n):
cmd = input().split()
result = False
if cmd[0] == "C":
result = create(cmd[1], int(cmd[2]))
elif cmd[0] == "R":
result = remove(cmd[1])
else:
result = quota(cmd[1], int(cmd[2]), int(cmd[3]))
if result:
print("Y")
else:
print("N")
# print(root_directory)

if __name__ == '__main__':
main()

CSP 202012-1 期末预测之安全指数

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#include <iostream>
#include <algorithm>
#include <cstdio>
#include <cstdlib>

using namespace std;

int main() {
long long sum=0,n;
long long w,score;
ios::sync_with_stdio(false);
cin>>n;
while(n--){
cin>>w>>score;
sum+=w*score;
}
cout<<max(0ll,sum);
}

Openjudge BJUTACM 19g系列代码

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题目链接：
http://bjutacm.openjudge.cn/lianxi/?page=2

继续阅读 →

UVA1588 换抵挡装置 Kickdown

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#include<iostream>
#include<string>
#include<map>
#include<algorithm>
#include<cmath>
#include<cstring>
#include<typeinfo>
using namespace std;
int solve(string a, string b) {
a.append(b.size(), '0');
for (int i = 0; i < a.size()-b.size()+1; i++) {
bool flag = true;
for (int j = 0; j < b.size(); j++) {
if (a[i+j] + b[j] - '0' > '3') {
flag = false;
break;
}
}
if (flag)
return max(a.size()-b.size(), i + b.size());
}
return a.size();
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
string a, b;
while (cin >> a >> b)cout<<min(solve(a, b),solve(b,a))<<'\n';
}

UVA202 循环小数 Repeating Decimals

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模拟除法，当出现余数第二次相同时可以记为一个循环节。

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#include<iostream>
#include<string>
#include<map>
#include<cmath>
#include<cstring>
#include<typeinfo>
using namespace std;

void solve(int a, int b) {
int OA = a;
string strInt = to_string(a / b);
a %= b;
a *= 10;
string strDec = "";
map<int, int> dict;
while (dict.count(a) == 0) {
dict[a] = strDec.size();
strDec += to_string(a / b);
a %= b;
a *= 10;
}
string strDec1 = strDec.substr(0, dict[a]);
string strDec2 = strDec.substr(dict[a]);
string strDec3 = "";
if (strDec2.size() > 50) {
strDec3 = '(' + strDec2.substr(0, 50) + "...)";
}
else {
strDec3 = '(' + strDec2 + ")";
}
cout << OA << "/" << b << " = " << strInt << "." << strDec1 << strDec3 << '\n';
cout << " " << strDec2.size() << " = number of digits in repeating cycle" << '\n';
cout << '\n';
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
int a, b;
while (cin >> a >> b)solve(a, b);
}

蓝桥杯历届试题小计算器

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问题描述
　　模拟程序型计算器，依次输入指令，可能包含的指令有

　　1. 数字：’NUM X’，X为一个只包含大写字母和数字的字符串，表示一个当前进制的数
　　2. 运算指令：’ADD’,’SUB’,’MUL’,’DIV’,’MOD’，分别表示加减乘，除法取商，除法取余
　　3. 进制转换指令：’CHANGE K’，将当前进制转换为K进制(2≤K≤36)
　　4. 输出指令：’EQUAL’，以当前进制输出结果
　　5. 重置指令：’CLEAR’，清除当前数字

　　指令按照以下规则给出：
　　数字，运算指令不会连续给出，进制转换指令，输出指令，重置指令有可能连续给出
　　运算指令后出现的第一个数字，表示参与运算的数字。且在该运算指令和该数字中间不会出现运算指令和输出指令
　　重置指令后出现的第一个数字，表示基础值。且在重置指令和第一个数字中间不会出现运算指令和输出指令
　　进制转换指令可能出现在任何地方

　　运算过程中中间变量均为非负整数，且小于2^63。
　　以大写的’A’~’Z’表示10~35
输入格式
　　第1行：1个n，表示指令数量
　　第2..n+1行：每行给出一条指令。指令序列一定以’CLEAR’作为开始，并且满足指令规则
输出格式
　　依次给出每一次’EQUAL’得到的结果
样例输入
7
CLEAR
NUM 1024
CHANGE 2
ADD
NUM 100000
CHANGE 8
EQUAL
样例输出
2040

可以说样例给的挺恶心。会让人想不到，这玩意要考虑还是不考虑优先级！？最后在测试下是不需要考虑优先级的。直接挨着个的算即可。还有一个点是我进制转换写错了（竟然’A’->11，生无可恋脸）一直在调这里。。。。其他没啥了。

#include<iostream>
#include<deque>
#include<algorithm>
#include<cassert>
#include<cstdlib>
#include<string>
using namespace std;
int n;
int radix = 10;
string radixS = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
deque<long long> sll;
deque<string> sop;
long long value;
inline long long getCorDecimal(char c) {
if ('0' <= c && c <= '9')return c - '0';
if ('A' <= c && c <= 'Z')return c - 'A' + 10;
assert(false);
return -1;
}
long long Radix2Decimal(string s) {
reverse(s.begin(), s.end());
long long cntBase = 1, result = 0;
for (int i = 0; i<s.size(); i++) {
result += getCorDecimal(s[i])*cntBase;
cntBase *= radix;
}
return result;
}
string Decimal2Radix(long long v) {
string s = "";
while (v) {
s.push_back(radixS[v%radix]);
v /= radix;
}
if (s == "")s = "0";
reverse(s.begin(), s.end());
return s;
}
bool calculate4Back() {
if (sop.empty())return false;
string & comm = sop.back();
if (comm == "ADD")value += sll.back();
else if (comm == "SUB")value = sll.back() - value;
else if (comm == "MUL")value *= sll.back();
else if (comm == "DIV")value = sll.back() / value;
else if (comm == "MOD")value = sll.back() % value;
else assert(false);
sop.pop_back();
sll.pop_back();
sll.push_back(value);
return true;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n;
for (int i = 1; i <= n; i++) {
string comm, radixV;
cin >> comm;
if (comm == "NUM") {
cin >> radixV;
value = Radix2Decimal(radixV);
if (!calculate4Back())sll.push_back(value);
//cout<<Decimal2Radix(sll.front())<<endl;
}
else if (comm == "ADD" || comm == "SUB" || comm == "MUL" || comm == "DIV" || comm == "MOD") {
sop.push_back(comm);
}
else if (comm == "CHANGE") {
cin >> radix;
}
else if (comm == "EQUAL") {
cout << Decimal2Radix(sll.front()) << endl;
}
else if (comm == "CLEAR") {
sll.clear();
sop.clear();
}
}
}

洛谷 P1022 计算器的改良

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#define _CRT_SECURE_NO_WARNINGS
#include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
using namespace std;
int ratio = 0, constant = 0;
#define IfLetter if (ch <= 'Z'&&ch >= 'A' || ch <= 'z'&&ch >= 'a')
#define IfNumber if (ch >= '0'&&ch <= '9' || ch=='+' || ch=='-')
int main() {
char letter;
char ch;
int num = 0;
bool flag = true;
while ((ch = getchar()) != '\n') {
IfNumber{ // number(maybe with variable)
ungetc(ch, stdin);
int re = scanf("%d", &num); //specially prepared for the testcase form like "-a"
if (re == 0) {
getchar();
ratio -= (flag ? 1 : -1);
}
ch = getchar();
IfLetter{
ratio += num * (flag ? 1 : -1);
letter = ch;
}
else {
constant += num * (flag ? 1 : -1);
ungetc(ch, stdin);
}
num = 0;
}
else IfLetter{ //pure variable without ratio
letter = ch;
ratio+=(flag ? 1 : -1);
}
else if (ch == '=') {
flag = false;
}
}
printf("%c=%.3lf", letter, -1.0*constant / ratio);
}

洛谷 P1058 立体图

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虽然写的时间很长，但是AC之后随便画图可是很好玩的哦。。。

#include<iostream>
#include<string>
#include<cstring>
#include<algorithm>
#include<functional>
#define ll long long
#define pii pair<int,int>
#define PINF 0x7fffffff
#define NINF 0x80000000
using namespace std;
int m, n, am, an;
int arr[55][55];
char output[500][500];
int calM(int m, int mh, int tm) { //每行挑最大的执行一次
return (tm - m + 1) * 2 + max(1 + 3 * mh, 1 + 2 * (m - 1));
}
inline int calN(int m, int n) { //整体执行一次
return 1 + 4 * n + 2 * m;
}
inline void printLine(int x, int y) {
output[x][y] = output[x][y + 4] = '+';
output[x][y + 1] = output[x][y + 2] = output[x][y + 3] = '-';
}
inline void printRow(int x, int y) {
output[x][y] = output[x + 2][y - 2] = '+';
output[x + 1][y - 1] = '/';
}
inline void printHeight(int x, int y) {
output[x][y] = output[x + 3][y] = '+';
output[x + 1][y] = output[x + 2][y] = '|';
}
inline void printSpace(int x, int y) {
output[x + 1][y] = output[x + 1][y + 1] = output[x + 1][y + 2] = ' ';
output[x + 3][y - 1] = output[x + 3][y] = output[x + 3][y + 1] = ' ';
output[x + 4][y - 1] = output[x + 4][y] = output[x + 4][y + 1] = ' ';
output[x + 2][y + 3] = output[x + 3][y + 3] = ' ';
}
inline void printCube(int x, int y) { //左上角坐标
printLine(x, y);
printLine(x + 2, y - 2);
printLine(x + 5, y - 2);
printRow(x, y);
printRow(x, y + 4);
printRow(x + 3, y + 4);
printHeight(x + 2, y - 2);
printHeight(x + 2, y + 2);
printHeight(x, y + 4);
printSpace(x, y);
}
inline void printCube2(int l, int r, int h) {
printCube(am - 3 * h - 2 * (m-l+1), 1+2 * (m - l + 1) + (r - 1) * 4);
}
inline void printAns() {
for (int i = 1; i <= am; i++) {
cout << output[i] + 1 << endl;
}
cout << endl;
}
int main() {
cin >> m >> n;
an = calN(m, n);
for (int i = 1; i <= m; i++) {
int mmax = 0;
for (int j = 1; j <= n; j++) {
cin >> arr[i][j];
mmax = max(mmax, arr[i][j]);
}
am = max(am, calM(i, mmax, m));
}
for (int i = 1; i <= am; i++) {
for (int j = 1; j <= an; j++) {
output[i][j] = '.';
}
}
for (int i = 1; i <= m; i++) {
for (int j = 1; j <= n; j++) {
for (int k = 1; k <= arr[i][j]; k++) {
printCube2(i, j, k);
//printAns();
}
}
}
printAns();
}

提示：把79行的注释符号去掉可以看到图形生成全过程哦；
写了个好玩的小程序，随机生成数组中的高度哦。。。
各位OIer可以随便试试。。。

#include<iostream>
#include<string>
#include<cstring>
#include<algorithm>
#include<functional>
#include<ctime>
#define ll long long
#define pii pair<int,int>
#define PINF 0x7fffffff
#define NINF 0x80000000
using namespace std;
int m, n, am, an;
int arr[55][55];
char output[500][500];
int calM(int m, int mh, int tm) { //每行挑最大的执行一次
return (tm - m + 1) * 2 + max(1 + 3 * mh, 1 + 2 * (m - 1));
}
inline int calN(int m, int n) { //整体执行一次
return 1 + 4 * n + 2 * m;
}
inline void printLine(int x, int y) {
output[x][y] = output[x][y + 4] = '+';
output[x][y + 1] = output[x][y + 2] = output[x][y + 3] = '-';
}
inline void printRow(int x, int y) {
output[x][y] = output[x + 2][y - 2] = '+';
output[x + 1][y - 1] = '/';
}
inline void printHeight(int x, int y) {
output[x][y] = output[x + 3][y] = '+';
output[x + 1][y] = output[x + 2][y] = '|';
}
inline void printSpace(int x, int y) {
output[x + 1][y] = output[x + 1][y + 1] = output[x + 1][y + 2] = ' ';
output[x + 3][y - 1] = output[x + 3][y] = output[x + 3][y + 1] = ' ';
output[x + 4][y - 1] = output[x + 4][y] = output[x + 4][y + 1] = ' ';
output[x + 2][y + 3] = output[x + 3][y + 3] = ' ';
}
inline void printCube(int x, int y) { //左上角坐标
printLine(x, y);
printLine(x + 2, y - 2);
printLine(x + 5, y - 2);
printRow(x, y);
printRow(x, y + 4);
printRow(x + 3, y + 4);
printHeight(x + 2, y - 2);
printHeight(x + 2, y + 2);
printHeight(x, y + 4);
printSpace(x, y);
}
inline void printCube2(int l, int r, int h) {
printCube(am - 3 * h - 2 * (m - l + 1), 1 + 2 * (m - l + 1) + (r - 1) * 4);
}
inline void printArray() {
cout << "Printing each element of the array:" << endl;
for (int i = 1; i <= m; i++) {
for (int j = 1; j <= m; j++) {
cout << arr[i][j] << " ";
}
cout << endl;
}
}
inline void printAns() {
for (int i = 1; i <= am; i++) {
cout << output[i] + 1 << endl;
}
cout << endl;
}
int main() {
srand((unsigned)time(NULL));
cout << "Please input the side length "n" of the cube array (n<=50):";
int len;
cin >> len;
m = n = len;
an = calN(m, n);
cout << "Please input the max height "mh" of cubes in each array item (1<=mh<=100):";
int mh;
cin >> mh;
cout << "Do you want to show the whole process of filling?(Answer with 0[No] or 1[Yes]):";
bool flag;
cin >> flag;
for (int i = 1; i <= m; i++) {
int mmax = 0;
for (int j = 1; j <= n; j++) {
arr[i][j] = rand() % mh + 1;
mmax = max(mmax, arr[i][j]);
}
am = max(am, calM(i, mmax, m));
}
for (int i = 1; i <= am; i++) {
for (int j = 1; j <= an; j++) {
output[i][j] = '.';
}
}
cout << "Automatically generated an array,printed in the following.Press ENTER to continue." << endl;
printArray();
cin.get(); cin.get();
for (int i = 1; i <= m; i++) {
for (int j = 1; j <= n; j++) {
for (int k = 1; k <= arr[i][j]; k++) {
if (flag)cout << "Printing cube on postion(" << i << "," << j << "," << k << ")." << endl;
printCube2(i, j, k);
if (flag)printAns();
}
}
}
cout << "Printing Final Result:" << endl;
printAns();
}

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