汪汪与打针 （C语言代码）

解题思路:

注意事项:

参考代码:

#include <stdio.h>

#include <stdlib.h>

int main(){

   int a,b;

   int t = 0,m = 2,c = 1;

   while(~scanf("%d %d", &a,&b)){

      if(a < 120)

         printf("0\n");

      else{

        c = 1;

         m = 2;

         a -= 120;

         while(t != abs(a)){

            t = a;

            if(m < 4)

               a = a+b-120;

            else

               a = a+b-100;

            if(a > 0)

               c++;

            m++;

         }

         printf("%d\n", c);

      }

   }

   return 0;

}