Submission #764574

#	Time	Username	Problem	Language	Result	Execution time	Memory
764574		1075508020060209tc	Preokret (COCI19_preokret)	C++14	50 / 50	1 ms	340 KiB

preokret

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define X first
#define Y second
int n;
int ar[500005];
int A[500005];
int B[500005];

signed main(){
cin>>n;
for(int i=1;i<=n;i++){
    cin>>ar[i];
}
int rv=0;
int te=1;
for(int i=1;i<=n;i++){
    A[i]=A[i-1];
    B[i]=B[i-1];
    if(ar[i]==1){
        A[i]++;
    }else{
        B[i]++;
    }
    if(A[i]==B[i]){te++;}
}

for(int i=1;i<=n;i++){
    for(int j=i+1;j<=n;j++){
        if(ar[i]==1){
            if(A[j]-A[i-1]!=j-i+1){continue;}
            if(A[i]<B[i]&&A[j]>B[j]){
                rv=max(rv,j-i+1ll);
            }
        }else{
            if(B[j]-B[i-1]!=j-i+1){continue;}
            if(B[i]<A[i]&&B[j]>A[j]){
                rv=max(rv,j-i+1ll);
            }
        }
    }
}
cout<<A[n]<<" "<<B[n]<<endl;
cout<<te<<endl;
cout<<rv<<endl;

}

• Subtask 1: 50 / 50