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  1. process.stdin.resume();
  2. process.stdin.setEncoding('utf8');
  3.  
  4. process.stdin.on('data', function (chunk) {
  5.     const input = chunk.trim();
  6.     if (Math.abs(input.length) <= 5000) {
  7.     	const stack = [];
  8. 	    for (const char of input) {
  9. 	        if (char === '(') stack.push(char);
  10. 	        else if (char === ')') {
  11. 	            if (stack.length > 0 && stack[stack.length - 1] === '(') stack.pop();
  12. 	            else stack.push(char);
  13. 	        }
  14. 	        else if (char === '?') {
  15. 	            if (stack.length > 0 && stack[stack.length - 1] === '(') stack.pop();
  16. 	            else stack.push(char);
  17. 	        }
  18. 	    }
  19. 	    console.log(stack.length);
  20.     }
  21.     else console.log("La cadena supera el límite de longitud permitido.");
  22. });
  23.  
Success #stdin #stdout 0.07s 35960KB
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https://ideone.com/aoHQ5W
language:
Node.js (node 11.12.0)
created:
53 days ago
visibility:
public

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