题解 | #KiKi和酸奶#

#include <stdint.h>
#include <stdio.h>

int main() {
    int n,h,m;
    scanf("%d %d %d",&n,&h,&m);
    if(m%h<=0)
    {
        printf("%d",(n-m/h));
    }else if(m%h>0){
        printf("%d",(n-(m/h+1)));
    }
    return 0;
}