题解 | 开学？

#include <stdio.h>

int main()
{
    int sta=0,again=0,end=0;
    scanf("%d %d",&sta,&again);
    end=again%7+sta;
    if(end<=7)
    {
        printf("%d",end);
    }
    else if(end>7)
    {
        printf("%d",end%7);        
    }
    return 0;
}