제출 #307693

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
307693		zwliew	Prosjek (COCI18_prosjek)	C++17	50 / 50	1 ms	384 KiB

prosjek

#include <algorithm>
#include <array>
#include <bitset>
#include <chrono>
#include <climits>
#include <cmath>
#include <cstring>
#include <deque>
#include <ext/pb_ds/assoc_container.hpp>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
//#include "bits/stdc++.h"

using namespace std;

#ifdef LOCAL
#include "../../_library/cc/debug.h"
#define FILE "test"
#else
#define debug(...) 0
#define FILE ""
#endif

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  if (fopen(FILE ".in", "r")) {
    freopen(FILE ".in", "r", stdin);
    freopen(FILE ".out", "w", stdout);
  }
  
  int n;
  cin >> n;
  vector<int> a(n);
  for (auto &x : a) cin >> x;
  sort(a.begin(), a.end());
  double prev = a[0];
  for (int i = 1; i < n; ++i) {
    prev = (prev + a[i]) / 2;
  }
  cout << fixed << setprecision(6) << prev;
}

컴파일 시 표준 에러 (stderr) 메시지

prosjek.cpp: In function 'int main()':
prosjek.cpp:37:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   37 |     freopen(FILE ".in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
prosjek.cpp:38:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   38 |     freopen(FILE ".out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 50 / 50