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BRKTS - Brackets |
Your task is to determine if a sequence of opening and closing brackets is a valid expression. A valid expression is one where every opening bracket has a corresponding closing bracket.
Input
The input consists of several test cases. The first line of the input is an integer 0< n < 500. n lines follow, each one consisting of a sequence of brackets, which represents an expression.
Output
For each sequence in the input, print “:)” if the sequence is a valid expression, and “:(“ otherwise.
Example
Input:4
{}
}}{{{{{
{{}{}}{}
{{}}}}}Output::)
:(
:)
:(
| Added by: | Simon |
| Date: | 2011-05-12 |
| Time limit: | 0.100s |
| Source limit: | 50000B |
| Memory limit: | 1536MB |
| Cluster: | Cube (Intel G860) |
| Languages: | ASM32-GCC GAWK MAWK BC C-CLANG NCSHARP C++ 4.3.2 CPP14 CPP14-CLANG COBOL COFFEE D-CLANG D-DMD DART ELIXIR FANTOM FORTH GOSU GRV JAVA JS-MONKEY JULIA KTLN NIM NODEJS OBJC OBJC-CLANG OCT PICO PROLOG PYPY PYPY3 PY_NBC R RACKET RUST CHICKEN SED SQLITE SWIFT UNLAMBDA VB.NET |
| Resource: | https://docs.google.com/document/d/1WYMA9kda4g9zH7in5AsHjctKvkx8Nowc-V6FbMIpM_k/edit?hl=en&authkey=CMjAyJQO# |
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