제출 #696219

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
696219		Deepesson	Self Study (JOI22_ho_t2)	C++17	10 / 100	149 ms	5016 KiB

Main

#include <bits/stdc++.h>
#define MAX 305000

using ll = long long;
ll A[MAX],B[MAX];
ll N,M;

ll teto(ll a,ll b){
    ll c = a/b;
    if(a%b)++c;
    return c;
}

bool possivel(ll x){
    ll sum=0;
    for(int i=0;i!=N;++i){
        ll necessario = teto(x,A[i]);
        ll gastar = std::min(necessario,M);
        ll falta = x-(gastar*A[i]);
        if(falta>0){
            ll precisa = teto(falta,B[i]);
            sum-=precisa;
        }else {
            ll sobra = M-gastar;
            sum+=sobra;
        }
    }
    return sum>=0;
}

int main()
{
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);
    std::cout.tie(0);
    std::cin>>N>>M;
    for(int i=0;i!=N;++i)std::cin>>A[i];
    for(int i=0;i!=N;++i)std::cin>>B[i];
    for(int i=0;i!=N;++i){
        if(A[i]<B[i]){
            A[i]=B[i];
        }
    }

    ll l=1,r=1LL<<30LL;
    while(l<r){
        ll m=(l+r+1)/2;
        if(possivel(m)){
            l=m;
        }else r=m-1;
    }
    std::cout<<l<<"\n";
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 25
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29
• Subtask 5: 0 / 9