Submission #916020

#	Time	Username	Problem	Language	Result	Execution time	Memory
916020		yeediot	Self Study (JOI22_ho_t2)	C++14	35 / 100	123 ms	13408 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define int long long 
#define pb push_back
#define pii pair<int,int>
#define F first
#define S second
#define all(X) X.begin(),X.end()
#define chmax(a,b) a=max(a,b)
#define chmin(a,b) a=min(a,b)
#ifdef local
void setio(){freopen("/Users/iantsai/Library/Mobile Documents/com~apple~CloudDocs/cpp/Empty.md","r",stdin);}
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
void setio(){}
#define debug(x...)
#endif
signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    setio();
    int n,m;
    cin>>n>>m;
    vector<pii>v;
    for(int i=0;i<n;i++){
        int a;
        cin>>a;
        v.pb({a,0});
    }
    for(int i=0;i<n;i++){
        int a;
        cin>>a;
        v[i].S=a;
    }
    sort(all(v),greater<>());
    int l=0,r=(int)1e18;
    while(l<r){
        int mm=l+r+1>>1;
        int left=0;
        bool ok=1;
        for(int i=0;i<n;i++){
            if(v[i].F>=v[i].S){
                if(v[i].F*m>mm){
                    int x=ceil((double)mm/v[i].F);
                    left+=m-x;
                }
                else{
                    int cur=mm;
                    cur-=m*v[i].F;
                    int x=ceil((double)cur/v[i].S);
                    left-=x;
                    if(left<0){
                        ok=0;
                        break;
                    }
                }
            }
            else{
                left+=m;
                int x=ceil((double)mm/v[i].S);
                left-=x;
                if(left<0){
                    ok=0;
                    break;
                }
            }
        }
        if(ok){
            l=mm;
        }
        else{
            r=mm-1;
        }
    }
    cout<<l<<'\n';
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:38:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   38 |         int mm=l+r+1>>1;
      |                ~~~^~

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