Submission #29032

#	Time	Username	Problem	Language	Result	Execution time	Memory
29032		cki86201	Wine Tasting (FXCUP2_wine)	C++11	1 / 1	103 ms	3072 KiB

wine

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <memory.h>
#include <math.h>
#include <assert.h>
#include <queue>
#include <map>
#include <set>
#include <string>
#include <algorithm>
#include <iostream>
#include <functional>
#include <unordered_map>
#include <unordered_set>
#include <list>
#include <bitset>

using namespace std;
typedef pair<int, int> Pi;
typedef long long ll;
#define pii Pi
#define pll PL
#define Fi first
#define Se second
#define pb(x) push_back(x)
#define sz(x) ((int)(x).size())
#define rep(i, n) for(int i=0;i<n;i++)
#define all(x) (x).begin(), (x).end()
typedef tuple<int, int, int> t3;
typedef pair<ll, ll> PL;
typedef long double ldouble;

void solve() {
	int n, k;
	int A[300030];
	scanf("%d%d", &n, &k);
	for(int i=1;i<=n;i++)scanf("%d", A+i);
	sort(A+1, A+1+n);
	int l = 1, r = n, t = 1;
	int p = 0; ll ans = 0;
	rep(a, k) {
		if(t) { ans += A[r--] - p; t ^= 1; }
		else { p = A[l++]; t ^= 1;}
	}
	printf("%lld\n", ans);
}

int main(){
	int tc = 1; // scanf("%d", &tc);
	for(int t=1;t<=tc;t++) {
		solve();
	}
	return 0;
};

Compilation message (stderr)

wine.cpp: In function 'void solve()':
wine.cpp:37:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &k);
                       ^
wine.cpp:38:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=n;i++)scanf("%d", A+i);
                                       ^

• Subtask 1: 1 / 1