제출 #576228

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
576228		Aldas25	Intercastellar (JOI22_ho_t1)	C++14	100 / 100	103 ms	12376 KiB

Main

/*
//#pragma GCC target ("avx2")
#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
*/

#include <bits/stdc++.h>

using namespace std;

#define FAST_IO ios_base::sync_with_stdio(0); cin.tie(nullptr)
#define FOR(i, a, b) for(int i = (a); i <= (b); i++)
#define REP(n) FOR(O, 1, (n))
#define pb push_back
#define f first
#define s second
typedef long double ld;
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vii;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int MAXN = 500100, MAXK = 20;
const ll INF = 1e14;
//const ll MOD = 1e9+7;
const ll MOD = 998244353;

void setIO()
{
    FAST_IO;
}

void setIO(string s)
{
    FAST_IO;
    freopen((s+".in").c_str(), "r", stdin);
    freopen((s+".out").c_str(), "w", stdout);
}

int n, q;
ll a[MAXN];
ll val[MAXN], cnt[MAXN], pref[MAXN];

int main()
{
    setIO();

    cin >> n;
    FOR(i, 1, n) cin >> a[i];

    FOR(i, 1, n) {
        val[i] = a[i];
        while (val[i]%2 == 0) {
            val[i] /= 2;
        }
        cnt[i] = a[i] / val[i];
        pref[i] = pref[i-1] + cnt[i];
    }

    cin >> q;
    while (q--) {
        ll x; cin >> x;
        int le = 1, ri = n;
        while (le < ri) {
            int m = (le+ri)/2;
            if (pref[m] >= x) ri = m;
            else le = m+1;
        }

        cout << val[le] << "\n";
    }

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'void setIO(std::string)':
Main.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((s+".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:39:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |     freopen((s+".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 25 / 25
• Subtask 2: 35 / 35
• Subtask 3: 40 / 40