Submission #419662

#	Time	Username	Problem	Language	Result	Execution time	Memory
419662		vato_chachanidze	Zagrade (COI17_zagrade)	C++14	30 / 100	260 ms	2872 KiB

zagrade

#include<bits/stdc++.h>
using namespace std;
long long n,l1,l2,k,ans,gaxs;
vector<long long> shekr;
string s;
int main()
{
	cin>>n;
	cin>>s;
	for(k=1;k<=n-1;k++)
	{
		cin>>l1>>l2;
	}
	shekr.push_back(0);
	for(k=1;k<=n;k++)
	{
		if(s[k-1]=='('){
			gaxs++;
			shekr.push_back(0);
		}
		else{
			if(gaxs==0)
			{
				shekr.clear();
				shekr.push_back(0);
				continue;
			}
			else
			{
				if(shekr.size()>0)	shekr.pop_back();
				ans+=1;
				ans+=shekr[shekr.size()-1];
				shekr[shekr.size()-1]++;			
			}
			gaxs--;
		}
	}
	gaxs=0;
	shekr.clear();
	shekr.push_back(0);
	for(k=n;k>=1;k--)
	{
		if(s[k-1]=='('){
			gaxs++;
			shekr.push_back(0);
		}
		else{
			if(gaxs==0)
			{
				shekr.clear();
				shekr.push_back(0);
				continue;
			}
			else
			{
				if(shekr.size()>0)	shekr.pop_back();
				ans+=1;
				ans+=shekr[shekr.size()-1];
				shekr[shekr.size()-1]++;			
			}
			gaxs--;
		}
	}
	
	cout<<ans<<endl;
}

• Subtask 1: 0 / 10
• Subtask 2: 30 / 30
• Subtask 3: 0 / 60