#include <cstdio>
#include <stdio.h>
#include <stdbool.h>
#include <iostream>
#include <map>
#include <vector>
#include <climits>
#include <stack>
#include <string>
#include <queue>
#include <algorithm>
#include <set>
#include <unordered_set>
#include <unordered_map>
#include <cmath>
#include <cctype>
#include <bitset>
#include <iomanip>
#include <cstring>
#include <numeric>
#include <cassert>
#include <chrono>
using namespace std;
#define int long long
#define pii pair<int, int>
#define mp make_pair
#define pb push_back
#define fi first
#define se second
struct node{
int s, e, m, val;
node *l, *r;
void create(){
if (l==nullptr){
l = new node(s, m);
r = new node(m+1, e);
}
}
node(int S, int E){
s = S, e = E, m = (s+e)/2;
val=LLONG_MIN/2;
l=r=nullptr;
}
void up(int left, int right, int v){
if (left<=s && e<=right)val=max(val, v);
else{
create();
if (s<=right&&left<=m)l->up(left, right, v);
if (right>m&&left<=e)r->up(left, right, v);
}
}
int query(int i){
if (s==e)return val;
create();
if (i<=m)return max(val, l->query(i));
return max(val, r->query(i));
}
}*st;
int32_t main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int n, q, a, b, c;
cin>>n>>q;
st = new node(1, n);
while (q--){
cin>>a>>b>>c;
st->up(a, b, c-a);
}
for (int i=1; i<=n; ++i)cout<<max(0ll, st->query(i)+i)<<" ";
}
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