#include <iostream>
#include <stack>
using namespace std;
void solve(string &s){
stack<char> cur;
for(int i = 0; i < s.size(); i++){
if(!cur.empty() && ((cur.top() == '(' && s[i] == ')') || (cur.top() == '{' && s[i] == '}') || (cur.top() == '[' && s[i] == ']')))
cur.pop();
else cur.push(s[i]);
}
if(cur.empty()) cout << "YES";
else cout << "NO";
}
signed main() {
string str;
cin >> str;
solve(str);
}
Вроде оно
Объяснение:
#include "stdafx.h"
#include "stdio.h"
#include <time.h>
#include <stdlib.h>
class vector
{
private:
int* m;
int size;
public :
vector(int n = 0);
vector(const vector &vector2);
~vector();
};
vector::vector( int n )
{
if (n < 0) n = 0;
size = n;
m = new int[n];
if(!m)
printf("Error");
else
m = NULL;
}
vector::vector(const vector &vector2)
{
size = vector2.size;
m = new int [size];
for(int i = 0; i<size;i++)
m[i] = vector2.m[i];
printf("kopia stvorena !");
}
vector::~vector()
{
delete[] m;
}
vector(int *m, int size)
{
srand(time(NULL))
if(!m)
printf("error")
else
for(int i = 0; i < size; i++)
m[i] = rand()% 99;
}
int main()
{
vector v1(45),
system("pause");
return 0;
}
