Submission #3246689


Source Code Expand

#include <iostream>
#include <vector>
#include <queue>
#include <cmath>
#include <bitset>
#include <algorithm>
#include <set>
#include <string>
#include <queue>

using namespace std;

#define rep(i, N) for(int (i) = 0; (i) < (N); (i) ++)
typedef long long ll;


int main(){
    int N, A, B;
    cin >> N >> A >> B;
    vector<int> hs(N, 0);
    rep(i, N){
        cin >> hs[i];
    }
    int l = 0;
    int r = 1e9;
    int ans = 1;
    while(l <= r){
        ll t = 0;
        int mid = (l + r) / 2;
        double de = A - B;
        rep(i, N){
            // midの必要性を検証.
            double tmp = hs[i] - 1.0 * B * mid;
            if(tmp > 0){
                t += ceil((double)(tmp) / (de));
            }
        }
        if(t > mid){
            // mdではng
            l = mid + 1;
        }else{
            // mdでもok.
            r = mid - 1;
            ans = mid;
        }
    }

    cout  << ans << endl;

    return 0;
}

Submission Info

Submission Time
Task D - Widespread
User zakou
Language C++14 (GCC 5.4.1)
Score 400
Code Size 1007 Byte
Status AC
Exec Time 55 ms
Memory 640 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 400 / 400
Status
AC × 3
AC × 13
Set Name Test Cases
Sample a01, a02, a03
All a01, a02, a03, b04, b05, b06, b07, b08, b09, b10, b11, b12, b13
Case Name Status Exec Time Memory
a01 AC 1 ms 256 KB
a02 AC 1 ms 256 KB
a03 AC 1 ms 256 KB
b04 AC 1 ms 256 KB
b05 AC 47 ms 640 KB
b06 AC 55 ms 640 KB
b07 AC 50 ms 640 KB
b08 AC 50 ms 640 KB
b09 AC 46 ms 640 KB
b10 AC 43 ms 640 KB
b11 AC 45 ms 640 KB
b12 AC 46 ms 640 KB
b13 AC 53 ms 640 KB