编辑代码

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;
void (async function () {
  const n = Number(await readline());
  const lives = [];
  for (let i = 0; i < n; i++) {
    const [t, l] = (await readline()).split(" ").map(Number);
    lives.push([t, l + t]);
  }
  lives.sort((a, b) => {
    if (a[0] === b[0]) return a[1] - b[1];
    return a[0] - b[0];
  });
  // let count = 1;
  const dp = new Array(n).fill(1);
  for (let i = 1; i < n; i++) {
    for (let j = 0; j < i; j++) {
      // 如果上一场的结束时间+15>当前一场的开始时间，则不能参加，需要
      if (lives[j][1] + 15 <= lives[i][0]) {
        dp[i] = Math.max(dp[i], dp[j] + 1);
      }
    }
  }
  console.log(dp[n - 1]);
})();