#include <stdio.h>
#include <bits/stdc++.h>
using namespace std;
#define SZ(v) ((int)(v).size())
#define ALL(v) (v).begin(),(v).end()
#define one first
#define two second
typedef long long ll;
typedef pair<int, int> pi; typedef pair<ll, int> pli; typedef pair<ll, pi> plp;
typedef tuple<int, int, int> ti; typedef tuple<ll, int, int> tli;
const int INF = 0x3f2f1f0f;
const ll LINF = 1ll * INF * INF;
const int MAX_N = 3e5 + 100;
int N, K, Nr[MAX_N];
int main() {
cin >> N >> K;
for(int i=0; i<N; i++) scanf("%d", &Nr[i]);
sort(Nr, Nr+N);
int l = 0, r = N-1, last = 0;
ll ans = 0;
for(int i=0; i<K; i++) {
if(i % 2 == 0) {
ans += Nr[r] - last;
last = Nr[r]; r--;
} else {
ans += 0;
last = Nr[l]; l++;
}
}
printf("%lld\n", ans);
return 0;
}
Compilation message
wine.cpp: In function 'int main()':
wine.cpp:22:44: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
for(int i=0; i<N; i++) scanf("%d", &Nr[i]);
^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
3192 KB |
Output is correct |
2 |
Correct |
0 ms |
3192 KB |
Output is correct |
3 |
Correct |
0 ms |
3192 KB |
Output is correct |
4 |
Correct |
0 ms |
3192 KB |
Output is correct |
5 |
Correct |
0 ms |
3192 KB |
Output is correct |
6 |
Correct |
0 ms |
3192 KB |
Output is correct |
7 |
Correct |
0 ms |
3192 KB |
Output is correct |
8 |
Correct |
0 ms |
3192 KB |
Output is correct |
9 |
Correct |
0 ms |
3192 KB |
Output is correct |
10 |
Correct |
0 ms |
3192 KB |
Output is correct |
11 |
Correct |
0 ms |
3192 KB |
Output is correct |
12 |
Correct |
0 ms |
3192 KB |
Output is correct |
13 |
Correct |
0 ms |
3192 KB |
Output is correct |
14 |
Correct |
0 ms |
3192 KB |
Output is correct |
15 |
Correct |
0 ms |
3192 KB |
Output is correct |
16 |
Correct |
0 ms |
3192 KB |
Output is correct |
17 |
Correct |
3 ms |
3192 KB |
Output is correct |
18 |
Correct |
3 ms |
3192 KB |
Output is correct |
19 |
Correct |
6 ms |
3192 KB |
Output is correct |
20 |
Correct |
6 ms |
3192 KB |
Output is correct |
21 |
Correct |
16 ms |
3192 KB |
Output is correct |
22 |
Correct |
23 ms |
3192 KB |
Output is correct |
23 |
Correct |
23 ms |
3192 KB |
Output is correct |
24 |
Correct |
19 ms |
3192 KB |
Output is correct |
25 |
Correct |
96 ms |
3192 KB |
Output is correct |
26 |
Correct |
83 ms |
3192 KB |
Output is correct |
27 |
Correct |
99 ms |
3192 KB |
Output is correct |
28 |
Correct |
56 ms |
3192 KB |
Output is correct |
29 |
Correct |
113 ms |
3192 KB |
Output is correct |
30 |
Correct |
103 ms |
3192 KB |
Output is correct |
31 |
Correct |
79 ms |
3192 KB |
Output is correct |
32 |
Correct |
83 ms |
3192 KB |
Output is correct |
33 |
Correct |
0 ms |
3192 KB |
Output is correct |
34 |
Correct |
13 ms |
3192 KB |
Output is correct |