Submission #510086

#	Time	Username	Problem	Language	Result	Execution time	Memory
510086		M_sawas_	Nizin (COCI16_nizin)	C++17	0 / 100	130 ms	7864 KiB

nizin

#include <bits/stdc++.h>
#define ll long long
#define endl "\n"
using namespace std;
ll n,a[1000007],ans,x,l,r;
int main()
{
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    x=n/2,l=1,r=n;
    for(int i=1;i<=x&&r>l;i++){
        if(a[i]==a[n-i+1]){
            l++,r--;
        }
        else if(a[i]!=a[(n-i)+1]){
            if(a[i]+a[i+1]==a[n-i+1]){
                ans++,l+=2,r--;
            }
            else if(a[(n-i)+1]+a[n-i]==a[i]){
                ans++,l++,r-=2;
            }
            else if(a[i]+a[i+1]==a[(n-i)+1]+a[n-i]){
                ans+=2,l+=2,r-=2;
            }
        }
    }

    cout<<ans;

    return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10