Submission #99567

#	Time	Username	Problem	Language	Result	Execution time	Memory
99567		lovemathboy	Stove (JOI18_stove)	C++14	100 / 100	43 ms	2336 KiB

stove

#include <bits/stdc++.h>
using namespace std;

int n, k;
vector<int> a;
priority_queue<int> pq;

int main() {
	scanf("%d %d", &n, &k);
	a.resize(n);
	for (int i = 0; i < n; i++) {
		scanf("%d", &a[i]);
		if (i > 0) {
			pq.push(a[i] - a[i-1] - 1);
		}
	}
	int ans = a[n-1] - a[0] + 1;
	while (k > 1) {
		k--;
		ans -= pq.top();
		pq.pop();
	}
	printf("%d\n", ans);
	return 0;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:9:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~~
stove.cpp:12:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &a[i]);
   ~~~~~^~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50