第一题AC代码 while (cin >> t) { while (t>0) { int len = 0; int n = 0; cin >> len >> n; vector<int> ans(len + 1, 0); int l, r; for (int i = 0; i < n; i++) { cin >> l >> r; for (int j = l; j <= r; j++) { ans[j]++; } } for (int i = 1; i < len; i++) { cout << ans[i] << " "; } cout << ans.back() << endl; t--; } }