{"raw_statement":[{"iden":"problem statement","content":"There are $S$ sheep and $W$ wolves.\nIf the number of wolves is greater than or equal to that of sheep, the wolves will attack the sheep.\nIf the wolves will attack the sheep, print `unsafe`; otherwise, print `safe`."},{"iden":"constraints","content":"*   $1 \\leq S \\leq 100$\n*   $1 \\leq W \\leq 100$"},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$S$ $W$"},{"iden":"sample input 1","content":"4 5"},{"iden":"sample output 1","content":"unsafe\n\nThere are four sheep and five wolves. The number of wolves is not less than that of sheep, so they will attack them."},{"iden":"sample input 2","content":"100 2"},{"iden":"sample output 2","content":"safe\n\nMany a sheep drive away two wolves."},{"iden":"sample input 3","content":"10 10"},{"iden":"sample output 3","content":"unsafe"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}