南阳219----An problem about date

 /*
 1600年一月一日为星期6，所以算出ymd与1600-1-1差多少天对7取余即可
 */
 #include<stdio.h>
 int a[]={};
 int main()
 {
     int i,y,m,d,t = ,ans;
     for(i=; i<; i+=)
     {
         if(i% !=  || i%==)
             ++t;
         a[i-] = a[i-] = a[i-] = a[i-] = t;
     }
     while(~scanf("%d%d%d",&y,&m,&d))
     {
         ans =  + (y-)* + a[y-];
         switch(m)
         {
             case :d+=;break;
             case :d+=;break;
             case :d+=;break;
             case :d+=;break;
             case :d+=;break;
             case :d+=;break;
             case :d+=;break;
             case :d+=;break;
             case :d+=;break;
             case :d+=;break;
             case :d+=;break;
         }
         if( (m> && y%== && y%!=) || y%== && m>)
             d++;
         ans += d;
         printf("%d\n",ans%);
     }
     return ;
 }

 //最优解
 #include<cstdio>
 int main()
 {
     int y,m,d;
     while(~scanf("%d%d%d",&y,&m,&d))
     {
         if(m<) m+=,--y;
         printf("%d\n",(d+*m+*(m+)/+y+y/-y/+y/+)%); //蔡勒公式的变种
     }
 }