Submission #592006

#	Time	Username	Problem	Language	Result	Execution time	Memory
592006		starchan	Nizin (COCI16_nizin)	C++17	100 / 100	76 ms	25852 KiB

nizin

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define in pair<int, int>
#define f first
#define s second
#define pb push_back
#define pob pop_back
#define INF (int)1e17
#define MX (int)3e5+5
#define fast() ios_base::sync_with_stdio(false); cin.tie(NULL)
signed main()
{
	fast();
	int n;
	cin >> n;
	vector<int> a(n+1);
	vector<int> pref(n+1);
	vector<int> suff(n+1);
	for(int i = 1; i <= n; i++)
		cin >> a[i];
	pref[1] = a[1];
	suff[n] = a[n];
	for(int i = 2; i <= n; i++)
		pref[i] = pref[i-1]+a[i];
	for(int i = n-1; i >= 1; i--)
		suff[i] = suff[i+1]+a[i];
	int l = 1;
	int r = n;
	int ans = 1;
	while(l < r)
	{
		if(pref[l] == suff[r])
		{
			ans+=2;
			if(l+1 == r)
				ans--;
			l++;
			r--;
			continue;
		}
		if(pref[l] < suff[r])
			l++;
		else
			r--;
	}
	cout << n-ans;
	return 0;
}	

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