'use strict';
process.stdin.on('data', function(chunk) {
    var inputs = chunk.toString().trim();
    var expressions = inputs.split('\n');

    for (var i = 0; i < expressions.length; i++) {
        if (expressions[i] === '0 ? 0') {
            break;
        }
        console.log(expressions[i]);
    }
});
process.stdin.resume();
process.stdin.setEncoding('utf8');