蒟蒻求助70分

gdfz02sjy @ 2024-03-13 14:51:44

#include<bits/stdc++.h>
using namespace std;
int a,b,c,d;
int h,m;
int main(){
    cin>>a>>b;
    h=8;
    m=0;
    c=a/b;
    if(a%b!=0)c++;
    c+=10;
    m-=c;
    for(int i=0;i==i;i++){
        if(m<0){
            m+=60;
            h--;
        }
        else break;
    }
    cout<<"0"<<h<<":";
    if(m<10)cout<<"0"<<m;
    else cout<<m;
    return 0;
} 

by 杜都督 @ 2024-03-13 15:08:41

1. h--; -> h = (h - 1 + 24) % 24;

2. cout<<"0"<<h<<":"; -> printf("%02d:", h);

   @gdfz02sjy 因为你没考虑前一天出发的情况

by return0114514 @ 2024-03-13 16:10:55

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

by gdfz02sjy @ 2024-03-14 15:28:46

@return0114514 @杜都督 知道了，谢谢