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- #include <iostream>
- #include <stack>
- #include <string>
- #include <cstring>
- using namespace std;
- bool f(string s){
- stack <char> sym;
- for (int i = 0; i < s.strlen(), i++) {
- if (s[i] == '(' || s[i] == '{' || s[i] == '['){
- sym.push(s[i]);
- }
- else{
- if (s[i] == ')' && sym.top() == '('){
- sym.pop();
- }
- else{
- return False;
- }
- }
- else if{
- if (s[i] == ']' && sym.top() == '[') {
- sym.pop();
- }
- else{
- return False;
- }
- }
- else if {
- if (s[i] == '}' && sym.top() == '{') {
- sym.pop();
- } else {
- return False;
- }
- }
- }
- return sym.lenght();
- }
- string s;
- cin >> s;
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