Submission #1028385

#	Time	Username	Problem	Language	Result	Execution time	Memory
1028385		vjudge1	Sure Bet (CEOI17_sure)	C++17	0 / 100	1 ms	348 KiB

sure

#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define deb(x) cout<<#x<<": "<<x<<endl;
using lli=long long int;
using ld=long double;


void solve(){
    lli n=1;
 //   deb(n);
    cin>>n;
   // deb(n);
    vector<ld> v1(n);
    vector<ld> v2(n);
    for(lli i=0; i<n; ++i){
        cin>>v1[i]>>v2[i];
     //   deb(v1[i]);
       // deb(v2[i]);
    }
    sort(v1.rbegin(), v1.rend());
    sort(v2.rbegin(), v2.rend());
    ld ans=0;
    vector<ld> v3=v2;
    v3[0]--;
    for(lli i=1; i<n; ++i){
        v3[i]+=v3[i-1]-1;
    }
    for(lli i=1; i<n; ++i){
        v3[i]=max(v3[i],v3[i-1]);
//        deb(v3[i]);
    }
    ld sum1=0;
    ld sum2=0;
    lli j=0;
    for(lli i=0; i<n ; ++i){
        sum1+=v1[i];
        while(j<n && sum2<sum1){
            sum2+=v2[j];
            j++;
        }
        ld aux;
        if(j>=2){
            aux=v3[j-2]-i-1;
        }
        else aux=0;
       
        aux=max(aux, sum1-i-1-j);
        ans=max(ans, aux);
    }
    cout<<setprecision(4)<<fixed<<ans<<endl;
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    lli t=1;
    //cin>>t;
    while(t--){
        solve();
    }
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 40
• Subtask 3: 0 / 40