제출 #526349

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
526349		model_code	Self Study (JOI22_ho_t2)	C++17	100 / 100	225 ms	5128 KiB

Main

#include <iostream>
#include <vector>
using namespace std;
using ll = long long;

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    ll N, M;
    cin >> N >> M;
    vector<ll> A(N), B(N);
    for(ll& a : A) cin >> a;
    for(ll& b : B) cin >> b;
    for(ll i = 0; i < N; i++) A[i] = max(A[i], B[i]);

    ll ok = 0, ng = 1LL << 60;
    auto check = [&](ll x) -> bool {
        ll day = 0;
        for(ll i = 0; i < N; i++){
            if(x <= A[i] * M) day += (x + A[i] - 1) / A[i];
            else day += M + (x - A[i] * M + B[i] - 1) / B[i];
            if(day > N * M) return 0;
        }
        return 1;
    };
    while(ng - ok > 1){
        const ll mid = (ng + ok) / 2;
        if(check(mid)) ok = mid;
        else ng = mid;
    }
    cout << ok << endl;
}

• Subtask 1: 10 / 10
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 29 / 29
• Subtask 5: 9 / 9