Submission #510120

#	Time	Username	Problem	Language	Result	Execution time	Memory
510120		M_sawas_	Nizin (COCI16_nizin)	C++17	0 / 100	1090 ms	8424 KiB

nizin

#include <bits/stdc++.h>
#define ll long long
#define endl "\n"
using namespace std;
ll n,a[1000007],ans,l,r;
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    l=1,r=n;
    while(l<r){
        if(a[l]==a[r]){
            l++,r--;
        }
        else if(a[l]!=a[r]){
            if(a[l]+a[l+1]==a[r]){
                ans++,l+=2,r--;
            }
            else if(a[r]+a[r-1]==a[l]){
                ans++,l++,r-=2;
            }
            else if(a[l]+a[l+1]==a[r]+a[r-1]){
                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