Submission #1168832

#	Time	Username	Problem	Language	Result	Execution time	Memory
1168832		CrabCNH	Intercastellar (JOI22_ho_t1)	C++20	100 / 100	46 ms	5448 KiB

Main

#include <bits/stdc++.h>

#define task   "BriantheCrab"

#define int    long long
#define pii    pair <int, int>
#define fi     first
#define se     second
#define szf    sizeof
#define sz(s)  (int)((s).size())

using namespace std;

template <class T> void mini (T &t, T f) {if (t > f) t = f;}
template <class T> void maxi (T &t, T f) {if (t < f) t = f;}

const int maxN = 2e5 + 5;
const int inf = 1e18 + 7;
const int mod = 1e9 + 7;

int a[maxN], d[maxN];

void solve () {
    int n;
    cin >> n;
    for (int i = 1; i <= n; i ++) {
        int x;
        cin >> x;
        d[i] = d[i - 1];
        int cur = 0;
        while (x % 2 == 0) {
            x /= 2;
            cur++;
        }
        d[i] += (1 << cur);
        a[i] = x;
    }
    // for (int i = 1; i <= n; i ++) {
        // cout << d[i] << ' ';
    // }
    //cout << '\n';
    int q;
    cin >> q;
    while (q --) {
        int x;
        cin >> x;
        int l = 1, r = n, pos = -1;
        while (true) {
            if (l > r) {
                break;
            }
            int mid = (l + r) >> 1;
            //cout << l << ' ' << r << ' ' << mid << ' ' << d[mid] << '\n';
            if (d[mid] >= x) {
                pos = mid;
                r = mid - 1;
            }
            else {
                l = mid + 1;
            }
        }
        //cout << pos << ' ';
        cout << a[pos] << '\n';
    }
}

signed main () {
    cin.tie (nullptr) -> sync_with_stdio (false);
    if (fopen (task".inp", "r")) {
        freopen (task".inp", "r", stdin);
        freopen (task".out", "w", stdout);
    }
    int t = 1;
    //cin >> t;
    while (t --) {
        solve ();
    } 
    return 0;
}
// thfdgb

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:70:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |         freopen (task".inp", "r", stdin);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:71:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   71 |         freopen (task".out", "w", stdout);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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