const reader = require('readline').createInterface({
  input: process.stdin,
  output: process.stdout
});

let lines = [];

reader.on('line', line => {
  lines.push(line);
});

reader.on('close', () => {
  const x = lines[0].split(' ')[0];
  const mrMaxItems = new Set(lines[1].split(' '));
  const maxValuItems = new Set(lines[2].split(' '));

  const answer = 
    mrMaxItems.has(x) && maxValuItems.has(x) ? "MrMaxValu" :
    mrMaxItems.has(x) ? "MrMax" :
    maxValuItems.has(x) ? "MaxValu" :
    "-1";

  console.log(answer);
});