2884 알람 시계

cconst[(h, m)] = require('fs')
  .readFileSync('dev/stdin')
  .toString()
  .split(' ')
  .map(Number);
function timeCalc(h, m) {
  if (m - 45 < 0) {
    m = 60 - (45 - m);
    h == 0 ? (h = 23) : h--;
    console.log(h, m);
  } else {
    console.log(h, m - 45);
  }
}
timeCalc(h, m);