题解 100% AC

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,ta=0,tb=0,tc=0,sum;
    cin>>n;
    for(int i=0;i<n;i++){
        int a,b,c;
        cin>>a>>b>>c;
        ta+=a;
        tb+=b;
        tc+=c;
    }
    sum=ta+tb+tc;
    cout<<ta<<" "<<tb<<" "<<tc<<" "<<sum;
	return 0;
}