#include <bits/stdc++.h>
#define lsb(x) (x & (-x))
#define ll long long
#define ull unsigned long long
#define ld long double
// 217
// 44
using namespace std;
const int MAXN = (int) 3e5;
int x[MAXN + 1], l[MAXN + 1], r[MAXN + 1];
struct Data {
int pos;
bool operator <(const Data &other) const {
if(x[pos] - l[pos] == x[other.pos] - l[other.pos]) {
return pos < other.pos;
}
return x[pos] - l[pos] > x[other.pos] - l[other.pos];
}
};
multiset <Data> mst;
vector <int> upd[MAXN + 1];
int main() {
//ifstream cin("A.in");
//ofstream cout("A.out");
int i, n, m;
ios::sync_with_stdio(false);
cin.tie(0), cout.tie(0);
cin >> n >> m;
for(i = 1; i <= m; i++) {
cin >> l[i] >> r[i] >> x[i];
upd[l[i]].push_back(i);
upd[r[i] + 1].push_back(-i);
}
for(i = 1; i <= n; i++) {
for(auto it : upd[i]) {
if(it < 0) {
mst.erase(mst.find({-it}));
}
else {
mst.insert({it});
}
}
if(mst.size() == 0) {
cout << 0 << " ";
}
else {
auto it = *mst.begin();
cout << x[it.pos] - l[it.pos] + i << " ";
}
}
//cin.close();
//cout.close();
return 0;
}
