Submission #62224

#	Time	Username	Problem	Language	Result	Execution time	Memory
62224		kingpig9	Stove (JOI18_stove)	C++11	100 / 100	57 ms	10620 KiB

stove

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
const int MAXN = 1e5 + 10;

#define debug(...) fprintf(stderr, __VA_ARGS__)
#define fi first
#define se second
#define all(v) (v).begin(), (v).end()
#define fillchar(a, s) memset((a), (s), sizeof(a))

int N, K;
int A[MAXN];

int main() {
	scanf("%d %d", &N, &K);
	for (int i = 0; i < N; i++) {
		scanf("%d", &A[i]);
	}
	sort(A, A + N);
	int ans = A[N - 1] - A[0] + 1;

	priority_queue<int> pq;
	for (int i = 0; i < N; i++) {
		pq.push(A[i + 1] - A[i] - 1);
	}
	//K - 1 times at most
	for (int i = 1; i < K; i++) {
		if (pq.empty()) {
			break;
		}
		ans -= pq.top();
		pq.pop();
	}
	printf("%d\n", ans);
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:18:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &N, &K);
  ~~~~~^~~~~~~~~~~~~~~~~
stove.cpp:20:8: 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