Submission #1157919

#	Time	Username	Problem	Language	Result	Execution time	Memory
1157919		wjliangtpe	Self Study (JOI22_ho_t2)	C++20	0 / 100	1093 ms	2632 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define oo 10000000000000001
int n,m,a[200005],b[200005],l=oo,r,x,jump;
bool psb(int X){
    int cnt=0;
    for(int i=1;i<=n;i++){
        if(a[i]*m>X) cnt+=X/a[i]+(X%a[i]?1:0);
        else cnt+=m+(X-m*a[i])/b[i]+((X-m*a[i])%b[i]?1:0);
        if(cnt>m*n) return 0;
    }
    return 1;
}
signed main(){
    ios::sync_with_stdio(0),cin.tie(0);
    cin>>n>>m;
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    for(int i=1;i<=n;i++){
        cin>>b[i];
        a[i]=max(a[i],b[i]);
    }
    for(int i=1;i<=n;i++){
        r+=a[i];
        l=min(a[i],l);
    }
    l*=m;
    r=r*m/n+1;
    x=l;
    int jump=r-l;
    while(jump){
        while(psb(x+jump)) x+=jump;
        jump/=2;
    }
    cout<<x<<'\n';
    return 0;
}

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