#include <iostream>
using namespace std;
int main(void)
{
int n, m;
int arr[101] = {0};
int a, b, c;
cin >> n >> m;
for(int i = 0; i < m; i++)
{
cin >> a >> b >> c;
for(int k = a; k <= b; k++)
arr[k] = c;
}
for(int j = 1; j <= n; n++)
cout << arr[j] << " ";
return 0;
}
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