제출 #1247837

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1247837		Bui_Quoc_Cuong	Intercastellar (JOI22_ho_t1)	C++20	100 / 100	44 ms	5444 KiB

Main

#include <bits/stdc++.h>
using namespace std;
// #define int long long
typedef long long ll;
typedef pair<int, int> ii;
typedef pair<int, ii> iii;

template<class T>
    bool minimize(T &a, const T &b) {
        if (a > b) return a = b, true;
        return false;
    }

template<class T>
    bool maximize(T &a, const T &b) {
        if (a < b) return a = b, true;
        return false;
    }

#define FOR(i, a, b) for (int i = a; i <= (int)b; i++)
#define FORD(i, a, b) for (int i = a; i >= (int)b; i--)
#define MASK(i) (1LL << (i))
#define BIT(S, i) (((S) >> (i)) & 1)
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define all(x) x.begin(), x.end()
const int N = 5e5 + 5;

int n, q;
int a[N];

void init(void) {
    cin >> n;
    FOR(i, 1, n) cin >> a[i];
    cin >> q;
}

long long pre[N];
int b[N];
long long pw2[N];

void process(void) {
    pw2[0] = 1;
    FOR(i, 1, 32) pw2[i] = 1LL * pw2[i - 1] * 2;

    FOR(i, 1, n) {
        int cnt = 0;
        while (a[i] % 2 == 0) {
            cnt++;
            a[i] /= 2;
        }
        pre[i] = pre[i - 1] + pw2[cnt];
        b[i] = a[i];
    }

//    FOR(i, 1, n) cout << pre[i] << " ";
//    FOR(i, 1, n) cout << b[i] << " ";

    while (q--) {
        long long X; cin >> X;

        int l = 1, r = n, ans = 0;
        while (l <= r) {
            int mid = (l + r) >> 1;
            if (pre[mid] < X) ans = mid, l = mid + 1;
            else r = mid - 1;
        }

        cout << b[ans + 1] << "\n";
    }
}

signed main(void) {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    #define taskname "kieuoanh"
    if (fopen(taskname".inp", "r")) {
        freopen(taskname".inp", "r", stdin);
        freopen(taskname".out", "w", stdout);
    }
    init();
    process();
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:80:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   80 |         freopen(taskname".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:81:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   81 |         freopen(taskname".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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