Submission

Score: 100

User: GONGGONG

Problemset: เมทริกซ์สมมาตร

Language: cpp

Time: 0.005 second

Submitted On: 2026-10-11 00:12:29

#include <iostream>
using namespace std;

int main() {
    int n;cin>>n;
    int arr[n*(n-1)/2];
    for(int i=0;i<n*(n-1)/2;i++) cin>>arr[i];
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(i==j) cout<<'0'<<' ';
            else if(i<j){
                cout<<arr[j*(j-1)/2+i]<<' ';
            }else cout<<arr[i*(i-1)/2+j]<<' ';
        }
        cout<<'\n';
    }
}