function processData(input) { //Enter your code here var hh = parseInt(input.substr(0, 2)); var mmss = input.substr(2, 6); var pm = input.substr(8) === 'PM'; var is12 = hh === 12; var res = (is12 ? (pm ? 12: 0):(pm ? hh + 12: hh)); console.log('' + (res < 10 ? '0': '') + res + mmss); } process.stdin.resume(); process.stdin.setEncoding("ascii"); _input = ""; process.stdin.on("data", function (input) { _input += input; }); process.stdin.on("end", function () { processData(_input); });