#include <cstdio>
#include <algorithm>
#include <vector>

using namespace std;
struct nod {
       int a, b, s;
       nod(){};
       nod(int _a, int _b, int _c) {a = _a; b = _b; s = _c;}
       };
int N, M;
int puse = 0;
int v[2888];
vector<nod> V;
#define ALL(a) a.begin(), a.end()
bool operator<(const nod &a, const nod &b) {
     if (a.a < b.a) return true;
     if (a.a > b.a) return false;
     if (a.b < b.b) return true;
     return false;
     }
int main() {
    freopen("reconst.in", "r", stdin);
    freopen("reconst.out", "w", stdout);
    scanf("%d %d", &N, &M);
    while (M--) {
          int a, b, s;
          scanf("%d %d %d", &a, &b, &s);
          V.push_back(nod(a, b, s));
          }
    sort(ALL(V));
    for (int i = 0; i < V.size(); ++i) {
        int sum = V[i].s;
        int a = V[i].a, b = V[i].b;
        while (a <= b && a <= puse) {sum -= v[a];++a;}
        if (a <= b) v[b] = sum;
        puse = max(puse, b);
        }
    for (int i = 1; i <= N; ++i) if (i == 1) printf("%d", v[i]); else printf(" %d", v[i]);
    printf("\n");
    return 0;
    }