第13届浙江省赛D题POJ3939

/*
题目来源：13届浙江省大学生程序设计竞赛D题（POJ3939http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3939）
作者：1412190214李建青
类型：模拟
题目描述：
Description
Edward, the headmaster of the Marjar University, is very busy every day and always forgets the date.


There was one day Edward suddenly found that if Monday was the 1st, 11th or 21st day of that month, he could remember the date clearly in that week. Therefore, he called such week "The Lucky Week".


But now Edward only remembers the date of his first Lucky Week because of the age-related memory loss, and he wants to know the date of the N-th Lucky Week. Can you help him?


Input
There are multiple test cases. The first line of input is an integer T indicating the number of test cases. For each test case:


The only line contains four integers Y, M, D and N (1 ≤ N ≤ 109) indicating the date (Y: year, M: month, D: day) of the Monday of the first Lucky Week and the Edward's query N.


The Monday of the first Lucky Week is between 1st Jan, 1753 and 31st Dec, 9999 (inclusive).


Output
For each case, print the date of the Monday of the N-th Lucky Week.


Sample Input
2
2016 4 11 2
2016 1 11 10
Sample Output
2016 7 11
2017 9 11


题目大意：定义一个Lucky Week为1号或者11号或者21号为周一的那周，求给定的Lucky Week后面（包含这周）第N个Lucky Week的日期
注意：这里每400年一次循环，一个循环有2058个Lucky Week

*/

#include<iostream>#include<string>#include<stdio.h>using namespace std;int weekday(int y,int m,int d){       int tm=m>=3?(m-2):(m+10);       int ty=m>=3?y:(y-1);       return (ty+ty/4-ty/100+ty/400+(int)(2.6*tm-0.2)+d)%7;}int preoperate(){int year,mon,da,cont=0;for(year=1753;year<=1753+400;year++){for(mon=1;mon<=12;mon++){for(da=1;da<=21;da=da+10){if(weekday(year,mon,da)==1)cont++;}}}return cont;}void gotowhat(int y,int m,int d,int howmany){int cont=howmany;int year,mon,da;year=y;for(mon=m;mon<=12;mon++){for(da=(mon==m?d:1);da<=21;da=da+10){         int tag=weekday(year,mon,da);if(tag==1)cont--;if(cont==0){cout<<year<<" "<<mon<<" "<<da<<endl;return ;}}}for(year=y+1;year<=y+500;year++){for(mon=1;mon<=12;mon++){for(da=1;da<=21;da=da+10){       int tag=weekday(year,mon,da);if(tag==1)cont--;if(cont==0){cout<<year<<" "<<mon<<" "<<da<<endl;return ;}}}}}int main(){int t,y,m,d,number,st,ts;int oneturn=preoperate();cin>>t;while(t--){cin>>y>>m>>d>>number;st=number%2058;ts=number/2058;y+=400*ts;                number=number-2058*ts;gotowhat(y,m,d,number);}return 0;}