const rl = require('readline').createInterface({ input:process.stdin }) var lines = [] rl.on('line',line=>{ lines.push(line.split(' ')) }) rl.on('close',()=>{ var num = lines.shift()[0] var sortRule = lines.shift()[0] if(sortRule==='0'){ lines.sort((a,b)=>b[1]-a[1]) }else if(sortRule==='1'){ lines.sort((a,b)=>a[1]-b[1]) } lines.forEach(item=>{ console.log(item.join(' ')) }) })