#include<stdio.h>
main()
{    int i=0,a=0;
    while(i<20)
    {    for(; ;)
        {    if((i%5)==0) break;
            else
                i--;
        }
        i+=13;
        a+=i;
    }
    printf("%d\n",a);
}


结果是多少？大概说下过程吧，，