蒟蒻刚学OI求助P1194

// luogu-judger-enable-o2
#include<iostream>
#include<cstdio>

using namespace std;

int a,b;
int bi[10000][10000];
int ans;
int q[1000];

int main(){
    cin>>a>>b;
    for(int i=0;i<b;i++){
        for(int j=0;j<b;j++){
            cin>>bi[i][j];
        }
    }
    ans+=a;
    for(int i=0;i<b;i++){
        for(int j=i+1;j<b;j++){
            q[i]+=bi[i][j]; 
        }
    }
    int biggest=0,biggest_=0;
    for(int i=0;i<b;i++){
        if(q[i]>biggest){
            biggest=q[i];
            biggest_=i;
        }
    }
    for(int i=0;i<b;i++){
        ans+=bi[biggest_][i];
    } 
    cout<<ans;
    return 0;   
}