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- //Alhamdulillah
- //Md. Masrur Saqib-RUET-1803
- //Created on 06-09-2019 11.30
- #include<bits/stdc++.h>
- #define ll long long
- #define pb push_back
- #define dd double
- #define endl "\n"
- using namespace std;
- int main()
- {
- ios_base::sync_with_stdio(false);
- cin.tie(NULL);
- ll n, m,a,b,lar=0,k;
- cin >> n >> m;
- ll ara[n];
- for(ll i = 0; i<n; i++){
- ara[i] = 0;
- }
- for(ll i=0; i<m ; i++){
- cin >> a >> b >> k;
- a--;
- b--;
- for(ll j = a; j<=b ; j++){
- ara[j] += k;
- //cout << "hi" <<endl;
- }
- }
- for(ll i = 0; i<n ; i++){
- lar = (lar>ara[i])?lar:ara[i];
- }
- cout << lar << endl;
- return 0;
- }
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