#include <fstream>
using namespace std;

int n, m, v[2011], suma[2011];

void sol(int a, int b, int s)
{
    if(v[a] == 0)
    {
        v[a] = b;
        suma[a] = s;
    }

    else if(v[a] < b)
        sol(v[a] + 1, b, s - suma[a]);

    else if(v[a] > b)
    {
        sol(b + 1, v[a], suma[a] - s);
        v[a] = b;
        suma[a] = s;
    }
}

int main()
{
    int i, a, b, s, j;

    ifstream f("reconst.in");
    ofstream g("reconst.out");
    f >> n >> m;

    for(i = 1; i <= m; i++)
    {
        f >> a >> b >> s;
        sol(a, b, s);
    }
    for(i = n; i >= 1; i--)
        for(j = i + 1; j <= v[i]; j++)
            suma[i] -= suma[j];
    for(i = 1; i <= n; i++)
        g << suma[i] << ' ';

    g << '\n';
    g.close();
    return 0;
}