Submission #440761

#	Time	Username	Problem	Language	Result	Execution time	Memory
440761		MrDeboo	Exam (eJOI20_exam)	C++17	0 / 100	1083 ms	1740 KiB

exam

#include <bits/stdc++.h>
#define int long long
#define mod 1000000007
#define endl '\n'
using namespace std;
signed main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int n;
    cin>>n;
    pair<int,int>pr[n];
    for(int i=0;i<n;i++){
        cin>>pr[i].first;
    }
    for(int i=0;i<n;i++){
        cin>>pr[i].second;
    }
    bool bl[n];
    memset(bl,false,sizeof(bl));
    for(int i=0;i<n;i++){
        int a=0,b=0,z=i,maxi=0,x=0,y=0;
        for(int w=i;w<n&&pr[w].first<=pr[i].first;w++){
            if(pr[w].second==pr[i].first)a++;
            if(bl[w])b++;
            if(a-b>=maxi){x=a;y=b;maxi=a-b;z=w;}
        }
        int f=i;
        a=x;b=y;
        for(int w=(z==i?i:i-1);w>=0&&pr[w].first<=pr[i].first;w--){
            if(a-b>=maxi){maxi=a-b;f=i;}
            if(pr[w].second==pr[i].first)a++;
            if(bl[w])b++;
            if(a-b>=maxi){maxi=a-b;f=w;}
        }
        if(maxi>0){
            for(int w=f;w<=z;w++){
                if(pr[w].second==pr[i].first)bl[w]=true;
                else bl[w]=false;
            }
        }
    }
    int ans=0;
    for(int i=0;i<n;i++)if(bl[i])ans++;
    cout<<ans;
}
//5 1 1 1 6 5
//5 5 6 5 6

• Subtask 1: 0 / 14
• Subtask 2: 0 / 12
• Subtask 3: 0 / 13
• Subtask 4: 0 / 23
• Subtask 5: 0 / 16
• Subtask 6: 0 / 22