Submission #703658

#	Time	Username	Problem	Language	Result	Execution time	Memory
703658		Aestivate	Self Study (JOI22_ho_t2)	C++17	100 / 100	257 ms	5068 KiB

Main

#include<bits/stdc++.h>
#include<random>
using namespace std;
 
template<typename T> void _do(T x){cerr<<x<<"\n";}
template<typename T,typename ...U> void _do(T x,U ...y){cerr<<x<<", ";_do(y...);}
#define dbg(...) cerr<<#__VA_ARGS__<<" = ";_do(__VA_ARGS__);
 
#define float double
#define ss(n) fixed<<setprecision(n) 
#define ll long long
#define int ll
#define IO ios::sync_with_stdio(false);cin.tie(0);
#define ld long double
#define pb push_back
#define pii pair<int,int>
#define rep(i,a) for(int i=1;i<=a;i++)
#define rep0(i,a) for(int i=0;i<a;i++)
#define F first
#define S second
#define uni(a) a.resize(distance(a.begin(),unique(a.begin(),a.end())));
#define unisort(a) sort(a.begin(),a.end()); uni(a);
 
ll gcd(ll a,ll b){if(b==0) return a; return gcd(b,a%b);}
 
const ld pi=3.14159265358979323846264338327950288419716939931;
const int lar=3e18;
const int mol1=1e9+7;
const int mol2=998244353;
 
 
void solve()
{
    int n,m;
    cin>>n>>m;
    int a[n+1],b[n+1];
    rep(i,n) cin>>a[i];
    rep(i,n) cin>>b[i];
    rep(i,n) if(a[i]<b[i]) a[i]=b[i];
    int l=m,r=8e18;
    int ans;
    while(l<=r){
        __int128_t tt=0;
        int mid=l+r+1>>1;
        
        rep(i,n){
            if(a[i]>b[i]){
                if(a[i]*m>=mid){
                    tt+=((mid+a[i]-1)/a[i]);
                }
                else{
                    tt+=m;
                    int g1=mid-a[i]*m;
                    tt+=((g1+b[i]-1)/b[i]);
                }
            }
            else{
                tt+=((mid+b[i]-1)/b[i]);
            }
        }
        if(tt<=n*m) {
            ans=mid;
            l=mid+1;
        }
        else{
            r=mid-1;
        }
    }
    cout<<ans<<"\n";
    
}
 
signed main()
{
    IO
    solve();
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'void solve()':
Main.cpp:44:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   44 |         int mid=l+r+1>>1;
      |                 ~~~^~

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