Submission #916034

#	Time	Username	Problem	Language	Result	Execution time	Memory
916034		yeediot	Self Study (JOI22_ho_t2)	C++14	0 / 100	1 ms	348 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<pair<__int128,__int128>>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;
    }
    int l=0,r=2e18+10;
    while(l<r){
        int mm=l+r+1>>1;
        __int128 left=n*m;
        bool ok=1;
        for(int i=0;i<n;i++){
            if(v[i].F>=v[i].S){
                if(v[i].F*m>mm){
                    __int128 x=(mm-1)/v[i].F+1;
                    left-=x;
                }
                else{
                    __int128 cur=mm;
                    left-=m;
                    cur-=m*v[i].F;
                    __int128 x=(cur-1)/v[i].S+1;
                    left-=x;
                }
            }
            else{
                __int128 x=(mm-1)/v[i].S+1;
                left-=x;
            }
        }
        if(left>=0){
            l=mm;
        }
        else{
            r=mm-1;
        }
    }
    cout<<(int)l<<'\n';
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:37:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   37 |         int mm=l+r+1>>1;
      |                ~~~^~
Main.cpp:39:14: warning: unused variable 'ok' [-Wunused-variable]
   39 |         bool ok=1;
      |              ^~

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