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airconditioned.js
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airconditioned.js
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'use strict';
process.stdin.resume();
process.stdin.setEncoding('utf-8');
let inputString = '';
let currentLine = 0;
process.stdin.on('data', function(inputStdin) {
inputString += inputStdin;
});
process.stdin.on('end', function() {
inputString = inputString.split('\n');
main();
});
let len = 0;
let s = '';
function readLine() {
return inputString[currentLine++];
}
function makeMinion([from, to]) {
return { from , to };
}
function main() {
let n = parseInt(readLine()); // num minions
let minions = [];
while(n--) {
const minion = makeMinion(readLine().split(' ').map(Number));
minions.push(minion);
}
minions = minions.sort((a, b) => a.to - b.to);
let rooms = 1;
let curr = minions[0];
for (let i = 1; i < minions.length; i++) {
const m = minions[i];
if (m.from > curr.to) {
rooms++;
curr = m;
}
}
console.log(rooms);
}