https://ac.nowcoder.com/acm/contest/554/E

題解：樸素

/* *@Author: STZG *@Language: C++ */ #include <bits/stdc++.h> #include<iostream> #include<algorithm> #include<cstdlib> #include<cstring> #include<cstdio> #include<string> #include<vector> #include<bitset> #include<queue> #include<deque> #include<stack> #include<cmath> #include<list> #include<map> #include<set> //#define DEBUG #define RI register int #define endl "\n" using namespace std; typedef long long ll; //typedef __int128 lll; const int N=100000+10; const int M=100000+10; const int MOD=1e9+7; const double PI = acos(-1.0); const double EXP = 1E-8; const int INF = 0x3f3f3f3f; int t,n,m,k,p,l,r,u,v; int ans,cnt,flag,temp,sum; int a,b,c,y; char str; struct node{}; bool check(int y){return y%4==0&&y%100!=0||y%400==0; } int mo[2][13]={{0,31,28,31,30,31,30,31,31,30,31,30,31},{0,31,29,31,30,31,30,31,31,30,31,30,31}}; int main() { #ifdef DEBUGfreopen("input.in", "r", stdin);//freopen("output.out", "w", stdout); #endif//ios::sync_with_stdio(false);//cin.tie(0);//cout.tie(0);//scanf("%d",&t);//while(t--){while(~scanf("%d%d%d%d",&a,&b,&c,&y)){int week=1;int num=1;ans=0;int year,month,day;for(int i=1850;i<=y;i++){int f=check(i);for(int j=1;j<=12;j++){num=0;for(int k=1;k<=mo[f][j];k++){week++;if(week>7)week=1;if(week==c)num++;if(i==y&&j==a&&b==num&&week==c){ans=1;year=i;month=j;day=k;break;}}}}if(ans){printf("%d/",year);if(month<10)printf("0%d/",month);elseprintf("%d/",month);if(day<10)printf("0%d\n",day);elseprintf("%d\n",day);}else{cout<<"none"<<endl;}}//}#ifdef DEBUGprintf("Time cost : %lf s\n",(double)clock()/CLOCKS_PER_SEC); #endif//cout << "Hello world!" << endl;return 0; }

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