题解

#include<iostream>
using namespace std;
int main(){
    int n,a1=0,b1=0,c1=0,sum=0;
    cin>>n;
    for(int i=1;i<=n;i++){
        int a,b,c;
        cin>>a>>b>>c;
        a1+=a;
        b1+=b;
        c1+=c;
        sum+=a+b+c;
    }
    cout<<a1<<' '<<b1<<' '<<c1<<' '<<sum;
    return 0;
}

#include<iostream>
using namespace std;
int main(){
    int n,a1=0,b1=0,c1=0,sum=0;
    cin>>n;
    for(int i=1;i<=n;i++){
        int a,b,c;
        cin>>a>>b>>c;
        a1+=a;
        b1+=b;
        c1+=c;
    }
    sum+=a1+b1+c1;
    cout<<a1<<' '<<b1<<' '<<c1<<' '<<sum;
    return 0;
}