求教

Dark_Monarch @ 2023-11-19 16:47:17

by ljcnoi @ 2023-11-19 17:11:06

建议讨论好各种情况，认真审题

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int m=10;
    int s,v;
    cin>>s>>v;
    double sv=ceil(s*1.0/v);
    m=m+sv;
    int h=m/60;
    m=m%60;
    int tim=0,tih=8;
    tim=tim-m;
    if(tim<0)
    {
        tim=tim+60;
        tih--;
    }
    tih=tih-h;
    if(tih<0)
    {
        tih=tih+24;
    }
    if(tih<10)
    {
        cout<<0<<tih;
    }
    else
    {
        cout<<tih;
    }
    cout<<":";
    if(tim<10)
    {
        cout<<0<<tim;
    }
    else
    {
        cout<<tim;
    }
    return 0;
}

by Dark_Monarch @ 2023-12-03 14:30:48

@ljcnoi 已经AC了

by Dark_Monarch @ 2023-12-03 15:22:55

#include<bits/stdc++.h>
#include<cstdio>
#include<cmath>

using namespace std;

int main()
{
    int s,v;
    scanf("%d%d",&s,&v);
    int t_min = ceil(1.0 * s / v) + 10; //向上取整, 分钟为单位 
    int time_sum = 60 * (24 + 8); //时间限制
    int ans = time_sum - t_min;//从0点算，何时出发
    int h = (ans / 60) % 24;
    int min = ans % 60;
    printf("%02d:%02d",h,min);
    return 0;
}

@ljcnoi 这样更方便