Submission #1167902

#	Time	Username	Problem	Language	Result	Execution time	Memory
1167902		SmuggingSpun	Trading (IZhO13_trading)	C++20	100 / 100	195 ms	30440 KiB

trading

#include<bits/stdc++.h>
#define taskname "D"
using namespace std;
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	if(fopen(taskname".inp", "r")){
		freopen(taskname".inp", "r", stdin);
	}
    int n, m;
    cin >> n >> m;
    vector<vector<int>>add(n + 1), sub(n + 2);
    for(int i = 0; i < m; i++){
        int l, r, x;
        cin >> l >> r >> x;
        add[l].emplace_back(x - l);
        sub[r + 1].emplace_back(x - l);
    }
    vector<int>ans(n + 1, 0);
    multiset<int>s;
    for(int i = 1; i <= n; i++){
        for(int& j : add[i]){
            s.insert(j);
        }
        for(int& j : sub[i]){
            s.erase(s.find(j));
        }
        if(!s.empty()){
            ans[i] = *s.rbegin() + i;
        }
    }
    for(int i = 1; i <= n; i++){
        cout << ans[i] << " ";
    }
}

Compilation message (stderr)

trading.cpp: In function 'int main()':
trading.cpp:7:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |                 freopen(taskname".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100