Submission #557016

#	Time	Username	Problem	Language	Result	Execution time	Memory
557016		Ai7081	Stove (JOI18_stove)	C++17	100 / 100	33 ms	1872 KiB

stove

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

const int N = 1e5 + 5;

priority_queue<int> pq;
int n, k, a, b, ans;

int main() {
    scanf(" %d %d", &n, &k);
    scanf(" %d", &b);
    ans = 1-b;
    while (--n) {
        scanf(" %d", &a);
        pq.push(a - b - 1);
        b = a;
    }
    ans += b;
    while (--k) ans -= pq.top(), pq.pop();
    printf("%d", ans);
    return 0;
}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:10:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     scanf(" %d %d", &n, &k);
      |     ~~~~~^~~~~~~~~~~~~~~~~~
stove.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |     scanf(" %d", &b);
      |     ~~~~~^~~~~~~~~~~
stove.cpp:14:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         scanf(" %d", &a);
      |         ~~~~~^~~~~~~~~~~

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