Submission #1295427

#	Time	Username	Problem	Language	Result	Execution time	Memory
1295427		muhammad-mutahir	Self Study (JOI22_ho_t2)	C++20	0 / 100	142 ms	6044 KiB

Main

#include <bits/stdc++.h>
using namespace std;

#define print(l) for(auto i:l) cout<<i<<" ";cout<<endl;
#define input(t,l,n) vector<t>l(n);for(int i = 0;i<n;i++)cin>>l[i];
#define int long long
#define pb push_back
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update> 
#define all(l) l.begin(),l.end()
#define pii pair<int,int>
#define fi first
#define se second

const int M = 1e9+7;
const int inf = 1e18;


int bp(int x, int y, int p){
    int res = 1;
    x = x % p;
    while (y > 0) {
 
        if (y & 1)
            res = (res * x) % p;
        y = y >> 1;
        x = (x * x) % p;
    }
    return res;
}
 
int MI(int n, int p){
    return bp(n, p - 2, p);
}
int mul(int x,int y, int p){
    return x * 1ull * y % p;
}
int di(int x,int y, int p){
    return mul(x, MI(y, p), p);
}


int n , m , k , q;

void solve(int testcase_number){
    cin>>n>>k;
    input(int,a,n);
    input(int,b,n);

    int ans = inf;
    for(int i = 0;i<n;i++){
    	ans = min(ans,max(a[i],b[i]));
    }
    
    int l= 0;
    int r = 2e18+10;
    while(r-l>1){
    	
    	int m = (l+r)/2;
    	int ex = 0;
    	int rec = 0;
    	
    	for(int i = 0;i<n;i++){
    		if(a[i] >= b[i]){
    			if(a[i]*1ll*k >= m){
    				ex+= k - (m+a[i]-1)/a[i];
    			}
    			else{
    				int t = m-a[i]*k;
    				int c = (t+b[i]-1)/b[i];
	    			while(c*1ll*b[i] >= t){
	    				c--;
	    			}
	    			while(c*1ll*b[i] < t){
	    				c++;
	    			}
    				rec+= c;
    			}
    		}
    		else{
    			ex+=k;
    			int c = (m+b[i]-1)/b[i];
    			while(c*1ll*b[i] >= m){
    				c--;
    			}
    			while(c*1ll*b[i] < m){
    				c++;
    			}
    			rec+= c;  
    		}
    	}
    	// cout<<rec<<" "<<ex<<" "<<m<<endl;
    	if(rec <= ex){
    		l = m;
    	}
    	else{
    		r = m;
    	}
    	// cout<<rec<<" "<<ex<<endl;
    }
    
  
    cout<<l<<endl;


}


signed main(){
    ios::sync_with_stdio(0);//DO NOT USE IN INTERACTIVE
    cin.tie(0), cout.tie(0);
    cout << fixed<<setprecision(9);

    int t = 1;
    // cin>>t;
    for(int i = 1;i<=t;i++){
        solve(i);
    }

}

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