제출 #724925

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
724925		acm	Kpart (eJOI21_kpart)	C++14	100 / 100	1489 ms	1048 KiB

Main

#ifdef ONLINE_JUDGE
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
#pragma GCC target( \
    "sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#endif
#include <bits/stdc++.h>
#define speed                   \
  ios_base::sync_with_stdio(0); \
  cin.tie(0);                   \
  cout.tie(0);
#define precision     \
  cout.precision(30); \
  cerr.precision(10);
#define ll long long
#define ld long double
#define pb(x) push_back(x)
#define sz(x) (int)x.size()
#define mp(x, y) make_pair(x, y)
#define all(x) x.begin(), x.end()
#define pc(x) __builtin_popcount(x)
#define pcll(x) __builtin_popcountll(x)
#define F first
#define S second
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
void ioi(string name) {
  freopen((name + ".in").c_str(), "r", stdin);
  freopen((name + ".out").c_str(), "w", stdout);
}
int n, m, a[100005], b[100005], c[100005], d[100005];
vector<int> res;
void solve() {
  res.clear();
  cin >> n;
  for (int i = 1; i <= n; i++) cin >> a[i], b[i] = b[i - 1] + a[i], c[i] = 1;
  for (int i = 0; i <= 100000; i++) d[i] = 0;
  for (int i = 1; i <= n; i++) {
    for (int j = 100000 - a[i]; j >= 0; j--)
      d[j + a[i]] = max(d[j + a[i]], d[j]);
    d[a[i]] = i;
    for (int j = i; j >= 1; j--)
      c[i - j + 1] &=(!((b[i] - b[j - 1]) & 1) && (j <= d[(b[i] - b[j - 1]) / 2]));
  }
  for (int i = 1; i <= n; i++)
    if (c[i]) res.pb(i);
  cout << sz(res) << " ";
  for (auto x : res) cout << x << " ";
  cout << "\n";
}
int main() {
  speed;
  precision;
  // code
  int T;
  cin >> T;
  while (T--) solve();
    // endl
#ifndef ONLINE_JUDGE
  cerr << "\nTime elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
#endif
  return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'void ioi(std::string)':
Main.cpp:27:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |   freopen((name + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:28:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |   freopen((name + ".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 70 / 70