Submission #534171

#	Time	Username	Problem	Language	Result	Execution time	Memory
534171		LittleOrange	Self Study (JOI22_ho_t2)	C++17	0 / 100	343 ms	4940 KiB

Main

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
ll n,m;
vector<pair<ll,ll> > dat;
bool isok(ll target){ // ans>=target;
    ll time = 0;
    for (ll i = 0;i<n;i++){
        ll a = m;
        ll t = target - a*dat[i].first;
        if (t<=-dat[i].first){
            a -= (-t)/dat[i].first;
            t = target - a*dat[i].first;
        }else if (t>0){
            a += t/dat[i].second;
            t -= t/dat[i].second*dat[i].second;
            if (t>0){
                a++;
            }
        }
        time += a;
    }
    return time<=n*m;
}
ll check(ll l, ll r){
    if (l >= r) return l;
    ll mid = (l+r)/2;
    if (isok(mid+1)){
        return check(mid+1,r);
    }else{
        return check(l,mid);
    }
}
int main(){
    ios::sync_with_stdio(0);cin.tie(0);
    cin >> n >> m;
    dat.resize(n);
    for (ll i = 0;i<n;i++){
        cin >> dat[i].first;
    }
    for (ll i = 0;i<n;i++){
        cin >> dat[i].second;
        dat[i].first = max(dat[i].first, dat[i].second);
    }
    cout << check(0,5e18) << "\n";
}

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