Submission #915244

#	Time	Username	Problem	Language	Result	Execution time	Memory
915244		SmuggingSpun	Stove (JOI18_stove)	C++14	100 / 100	21 ms	2528 KiB

stove

#include<bits/stdc++.h>
#define taskname "stove"
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, k;
	cin >> n >> k;
	vector<int>t(n);
	for(int& x : t){
		cin >> x;
	}
	priority_queue<int>pq;
	for(int i = 1; i < n; i++){
		pq.push(t[i] - t[i - 1] - 1);
	}
	int ans = t[n - 1] - t[0] + 1;
	for(int i = 1; i < k; i++){
		ans -= pq.top();
		pq.pop();
	}
	cout << ans;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:7:10: 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: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50