Why RE?

Drin_love2003 @ 2019-11-01 10:45:04

#include<iostream>
#include<algorithm>
#include <string>
using namespace std;
struct stu
{
    int num, chn, mah, eng;
};
bool c(stu a, stu b)
{
    if (a.chn + a.mah + a.eng > b.chn + b.mah + b.eng)
        return true;
    else if (a.chn > b.chn)
        return true;
    else if (a.num < b.num)
        return true;
    else return false;
}
int main()
{
    int n;
    stu s[300];
    cin >> n;
    for (int i = 0; i < n; i++)
    {
        s[i].num = i + 1;
        cin >> s[i].chn >> s[i].mah >> s[i].eng;
    }
    sort(s, s + n, c);
    for (int i = 0; i < 5; i++)
        cout << s[i].num << " " << s[i].chn + s[i].mah + s[i].eng << endl;
    return 0;
}

by big_news @ 2019-11-01 11:03:06

为什么我找不到您的评测记录？

by 绿萧 @ 2019-11-01 11:12:24

@Drin_love2003
你的 函数c 写错了，而且数组要再开大一点，不然 sort 中 s+n 可能会越界

by Drin_love2003 @ 2019-11-01 12:13:16

@绿萧 那应该咋写

by Drin_love2003 @ 2019-11-01 12:13:52

@big_news 我用的Visual Studio，这么些总是异常

by 绿萧 @ 2019-11-01 13:35:34

@Drin_love2003

bool c(stu a, stu b)
{
    if (a.chn + a.mah + a.eng != b.chn + b.mah + b.eng)
        return a.chn + a.mah + a.eng > b.chn + b.mah + b.eng;
    else if (a.chn != b.chn)
        return a.chn > b.chn;
    else if (a.num != b.num)
        return a.num < b.num;
    else return false;
}

一定要等于才else，不然如果总分a比b小，但语文a比b大，你就返回true了

by Drin_love2003 @ 2019-11-02 22:12:53

@绿萧 THANK YOU SIR