求助求助。。为什么前两个数据总是放不进去

#include<bits/stdc++.h>
using namespace std;
int n;
struct data
{
    int total,chinese,id;
}a[310];
int cmp(data a,data b)
{
    return a.total>b.total;
    return a.chinese>b.chinese;
    return a.id<b.id;
}
int main()
{
    int math,english;
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i].chinese>>math>>english;
        a[i].total=a[i].chinese+math+english;
        a[i].id=i;
    }
    sort(a,a+n,cmp);
    for(int i=1;i<=5;i++)
    {
        cout<<a[i].id<<" "<<a[i].total<<endl; 
    }
    return 0;
}