oj.uz

답안 #145308

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
145308 2019-08-19T14:54:06 Z arayi Zagrade (COI17_zagrade) C++17
10 / 100
 691 ms 69252 KB 
#include <iostream>
#include <string>
#include <queue>
#include <stack>
#include <algorithm>
#include <math.h>
#include <vector>
#include <cstring>
#include <ctime>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <iomanip>
#include <ctime>
#define fr first
#define sc second
#define MP make_pair
#define PB push_back
#define fastio ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define lli long long int
#define y1 arayikhalatyan
using namespace std;

lli gcd(lli a, lli b) {
	if (b == 0)
		return a;
	return gcd(b, a % b);
}
lli cg(lli n) {
	return n ^ (n >> 1);
}
lli SUM(lli a)
{
	return (a * (a + 1) / 2);
}
bool CAN(int x, int y, int n, int m)
{
	if (x >= 0 && y >= 0 && x < n && y < m)
	{
		return true;
	}
	return false;
}
double her(double x1, double y1, double x2, double y2)
{
	return sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
}
string strsum(string a, string b)
{
	int p = 0;
	string c;
	reverse(a.begin(), a.end());
	reverse(b.begin(), b.end());
	if (b.length() < a.length())
	{
		for (int i = b.length(); i < a.length(); i++)
		{
			b += "0";
		}
	}
	else
	{
		for (int i = a.length(); i < b.length(); i++)
		{
			a += "0";
		}
	}

	a += "0", b += "0";
	for (int i = 0; i < a.length(); i++)
	{
		c += (a[i] - '0' + b[i] - '0' + p) % 10 + '0';
		p = (a[i] + b[i] - '0' - '0' + p) / 10;
	}
	if (c[c.length() - 1] == '0') c.erase(c.length() - 1, 1);
	reverse(c.begin(), c.end());
	return c;
}
string strmin(string a, string b)
{
	if (a.length() > b.length()) return b;
	if (b.length() > a.length()) return a;
	for (int i = 0; i < a.length(); i++)
	{
		if (a[i] > b[i]) return b;
		if (b[i] > a[i]) return a;
	}
	return a;
}

char vow[] = { 'a', 'e', 'i', 'o', 'u' };
int dx[] = { 1, -1, 0, 0 };
int dy[] = { 0, 0, 1, -1 };



const int N = 1e6 + 30;
const lli mod = 1000000007;
int mn(int a, int b)
{
	if (a < b) return a;
	return b;
}
int n, sm;
string s;
vector <int> g[N];
bool col[N];
int qan[N];
queue <int> h;
int nerq[2 * N], ver[2 * N];
int pat;
vector <int> ss;
void dfsqan(int v, int par)
{
	qan[v] = 1;
	for (auto p : g[v])
	{
		if (p != par && !col[p])
		{
			dfsqan(p, v);
			qan[v] += qan[p];
		}
	}
}

void dfshashvv(int v, int par, int min, int val)
{
	if (s[v - 1] == '(')
	{
		val++;
		min = mn(1, min + 1);
		if (min >= 0) ver[val + N]++, ss.PB(val + N);
	}
	else min = mn(-1, min - 1), val--;

	for (auto p : g[v])
	{
		if (p != par && !col[p])
		{
			dfshashvv(p, v, min, val);
		}
	}
}
void dfshashvn(int v, int par, int min, int val)
{
	if (s[v - 1] == '(') val++;
	else
	{
		val--;
		if (val <= min)  nerq[N + val]++, ss.PB(N + val);
		min = mn(val, min);
	}
	//cout << v << "_" << val << endl;
	for (auto p : g[v])
	{
		if (p != par && !col[p])
		{
			dfshashvn(p, v, min, val);
		}
	}
}
void dfspatn(int v, int par, int min, int val)
{
	if (s[v - 1] == '(') val++;
	else
	{
		val--;
		if (val <= min)  pat += ver[N - val];
		min = mn(val, min);
	}
	for (auto p : g[v])
	{
		if (p != par && !col[p])
		{
			dfspatn(p, v, min, val);
		}
	}
}
void dfspatv(int v, int par, int min, int val)
{
	if (s[v - 1] == '(')
	{
		val++;
		min = mn(1, min + 1);
		if (min >= 0) pat += nerq[N - val];
	}
	else min = mn(-1, min - 1), val--;
	for (auto p : g[v])
	{
		if (p != par && !col[p])
		{
			dfspatv(p, v, min, val);
		}
	}
}
void dfsc(int v, int par)
{
	bool flag = true;
	for (auto p : g[v])
	{
		if (p != par && !col[p])
		{
			if (qan[p] > sm)
			{
				dfsc(p, v);
				flag = false;
			}
		}
	}
	if (flag)
	{
		//cout << v << " ";
		col[v] = true;
		int val, min;
		if (s[v - 1] == '(') val = 1, min = 0;
		else val = -1, min = -1, nerq[N - 1]++, ss.PB(N - 1);
		for (auto p : g[v])
		{
			if (!col[p])
			{
				h.push(p);
				dfspatn(p, v, min, val);
				dfspatv(p, v, 0, 0);
				dfshashvn(p, v, min, val);
				dfshashvv(p, v, 0, 0);
			}
		}
		pat += nerq[N];
		if (val == 1) pat += ver[N - 1];
		for (auto p : ss) nerq[p] = 0, ver[p] = 0;
		ss.clear();
		//cout << pat << endl;
	}
}
int main()
{
	fastio;
	cin >> n >> s;
	for (int i = 0; i < n - 1; i++)
	{
		int a, b;
		cin >> a >> b;
		g[a].PB(b);
		g[b].PB(a);
	}
	h.push(1);
	while (!h.empty())
	{
		int k = h.front();
		h.pop();
		//cout << "k-" << k << endl;
		dfsqan(k, -1);
		sm = qan[k] / 2;
		dfsc(k, -1);
	}
	cout << pat;
	return 0;
}

Compilation message

zagrade.cpp: In function 'std::__cxx11::string strsum(std::__cxx11::string, std::__cxx11::string)':
zagrade.cpp:57:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = b.length(); i < a.length(); i++)
                            ~~^~~~~~~~~~~~
zagrade.cpp:64:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = a.length(); i < b.length(); i++)
                            ~~^~~~~~~~~~~~
zagrade.cpp:71:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < a.length(); i++)
                  ~~^~~~~~~~~~~~
zagrade.cpp: In function 'std::__cxx11::string strmin(std::__cxx11::string, std::__cxx11::string)':
zagrade.cpp:84:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < a.length(); i++)
                  ~~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 23928 KB Output is correct
2 Correct 25 ms 23928 KB Output is correct
3 Correct 24 ms 23928 KB Output is correct
4 Correct 25 ms 23928 KB Output is correct
5 Correct 25 ms 23928 KB Output is correct
6 Correct 25 ms 23928 KB Output is correct
7 Correct 25 ms 23928 KB Output is correct
8 Correct 25 ms 23928 KB Output is correct
9 Correct 25 ms 23928 KB Output is correct
10 Correct 24 ms 23928 KB Output is correct

Subtask #2
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 652 ms 65104 KB Output is correct
2 Correct 626 ms 66960 KB Output is correct
3 Correct 646 ms 65804 KB Output is correct
4 Correct 649 ms 66696 KB Output is correct
5 Correct 677 ms 65676 KB Output is correct
6 Correct 691 ms 66136 KB Output is correct
7 Correct 652 ms 65708 KB Output is correct
8 Correct 676 ms 66240 KB Output is correct
9 Correct 680 ms 65744 KB Output is correct
10 Correct 592 ms 69252 KB Output is correct
11 Incorrect 595 ms 67240 KB Output isn't correct

Subtask #3
0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 25 ms 23928 KB Output is correct
2 Correct 25 ms 23928 KB Output is correct
3 Correct 24 ms 23928 KB Output is correct
4 Correct 25 ms 23928 KB Output is correct
5 Correct 25 ms 23928 KB Output is correct
6 Correct 25 ms 23928 KB Output is correct
7 Correct 25 ms 23928 KB Output is correct
8 Correct 25 ms 23928 KB Output is correct
9 Correct 25 ms 23928 KB Output is correct
10 Correct 24 ms 23928 KB Output is correct
11 Correct 652 ms 65104 KB Output is correct
12 Correct 626 ms 66960 KB Output is correct
13 Correct 646 ms 65804 KB Output is correct
14 Correct 649 ms 66696 KB Output is correct
15 Correct 677 ms 65676 KB Output is correct
16 Correct 691 ms 66136 KB Output is correct
17 Correct 652 ms 65708 KB Output is correct
18 Correct 676 ms 66240 KB Output is correct
19 Correct 680 ms 65744 KB Output is correct
20 Correct 592 ms 69252 KB Output is correct
21 Incorrect 595 ms 67240 KB Output isn't correct