в матрицу

#include <iostream>
#include <cmath>
#include <vector>
#include <queue>
#include <algorithm>
#include <string>
#include <stack>
#include <set>
#include <map>
#define pii pair <int,int>
#define vec vector
using namespace std;
using ll = long long;
using ld = long double;
using db = double;
void cv(vector <int> &v){
    for (auto x: v) cout<<x<<' ';
    cout<<"\n";
}

void cvl(vector <ll> &v){
    for (auto x: v) cout<<x<<' ';
    cout<<"\n";
}


void cvv(vector <vector <int> > &v){
    for (auto x: v) cv(x);
    cout<<"\n";
}

void cvb(vector <bool> v){
    for (bool x: v) cout<<x<<' ';
    cout<<"\n";
}

void cvs(vector <string>  v){
    for (auto a: v){
        cout<<a<<"\n";
    }
}



int main()
{
    ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int n,m;
	cin>>n>>m;
	vector <vector <int> > mtr(n, vector <int> (n, 100000));
	for (int i = 0; i < m; ++i){
	    int a,b,c;
	    cin>>a>>b>>c;
	    mtr[a][b] = c;
	}
	cvv(mtr);
}
/*
13 15
0 1 1
1 2 10
0 3 100
3 1 -10
4 5 1
5 6 2
7 6 3
7 8 4
5 8 -10
9 10 1
10 11 2
11 12 -7
12 11 0
12 10 4
9 12 3


13
100000 1 100000 100 100000 100000 100000 100000 100000 100000 100000 100000 100000
100000 100000 10 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000
100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000
100000 -10 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000
100000 100000 100000 100000 100000 1 100000 100000 100000 100000 100000 100000 100000
100000 100000 100000 100000 100000 100000 2 100000 -10 100000 100000 100000 100000
100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000
100000 100000 100000 100000 100000 100000 3 100000 4 100000 100000 100000 100000
100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000
100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 1 100000 3
100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 2 100000
100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 -7
100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 4 0 100000
*/