제출 #1273413

#제출 시각아이디문제언어결과실행 시간메모리
1273413nhq0914Stove (JOI18_stove)C++17
0 / 100
1 ms332 KiB
#include <bits/stdc++.h>
using namespace std;

const int maxn = 1e5;

int n, k;
int ans;
int t[maxn];
int gap[maxn], cnt;

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);

	freopen("data.txt", "r", stdin);

	cin >> n >> k;

	for(int i = 0; i < n; ++i){
		cin >> t[i];
		if(i == 0 || t[i - 1] + 1 == t[i]) continue;
		gap[cnt++] = t[i] - t[i - 1] - 1;
	}

	ans = t[n - 1] - t[0] + 1;

	sort(gap, gap + cnt, greater <int> ());

	cnt = min(cnt, k - 1);
	for(int i = 0; i < cnt; ++i)
		ans -= gap[i];
	cout << ans;
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

stove.cpp: In function 'int main()':
stove.cpp:15:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         freopen("data.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
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