#include<bits/stdc++.h>
using namespace std;
using ll = long long;

int main(){
    int n;
    cin>>n;
    vector<vector<int> >a(n,vector<int>(n));
    for(int i = 0;i<n;i++) for(int j =0;j<n;j++) cin>>a[i][j];
    bool fn = false;
    int ni = -1;
    for(int i = 0;i<n;i++){
        bool can = true;
        for(int j = 0;j<n;j++) {
            if(a[i][j]==j&&a[j][i]==j) continue;
            can = false;
        }
        if(can){
            ni = i;
            fn = true;
            break;
        }
    }
    if(!fn){
        cout<<"No\n";
        return 0;
    }
    for(int i = 0;i<n;i++) {
        bool can = false;
        for(int j = 0;j<n;j++){
            if(a[i][j]==ni&&a[j][i]==ni) can = true;
        }
        if(!can) fn = false;
    }
    if(!fn){
        cout<<"No\n";
        return 0;
    }
    for(int i = 0;i<n;i++) for(int j = 0;j<n;j++) for(int k = 0;k<n;k++){
        int le = a[i][j];
        int w = a[le][k];
        int ri = a[j][k];
        if(w==a[i][ri]) continue;
        fn = false;
    }
    if(fn) cout<<"Yes\n";
    else cout<<"No\n";
}