結果
問題 |
No.274 The Wall
|
ユーザー |
![]() |
提出日時 | 2023-01-10 20:20:45 |
言語 | C++17(clang) (17.0.6 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 3 ms / 2,000 ms |
コード長 | 1,508 bytes |
コンパイル時間 | 1,487 ms |
コンパイル使用メモリ | 149,212 KB |
実行使用メモリ | 7,324 KB |
最終ジャッジ日時 | 2025-03-17 19:11:47 |
合計ジャッジ時間 | 2,390 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 23 |
コンパイルメッセージ
main.cpp:49:15: warning: variable length arrays in C++ are a Clang extension [-Wvla-cxx-extension] 49 | bool filled[M]; | ^ main.cpp:49:15: note: read of non-const variable 'M' is not allowed in a constant expression main.cpp:31:10: note: declared here 31 | int N, M; | ^ 1 warning generated.
ソースコード
#include <cassert> #include <cmath> #include <algorithm> #include <iostream> #include <iomanip> #include <climits> #include <map> #include <queue> #include <set> #include <cstring> #include <vector> using namespace std; typedef long long ll; struct Block { int l; int r; Block(int l = -1, int r = -1) { this->l = l; this->r = r; } bool operator<(const Block &n) const { return l < n.l; } }; int main() { int N, M; cin >> N >> M; vector<Block> blocks; for (int i = 0; i < N; ++i) { int l, r; cin >> l >> r; int l2 = (M - 1) - r; int r2 = (M - 1) - l; if (l < l2) { blocks.push_back(Block(l, r)); } else { blocks.push_back(Block(l2, r2)); } } sort(blocks.begin(), blocks.end()); bool filled[M]; memset(filled, false, sizeof(filled)); for (Block &block : blocks) { bool ok = true; for (int i = block.l; i <= block.r; ++i) { ok &= (not filled[i]); } if (ok) { for (int i = block.l; i <= block.r; ++i) { filled[i] = true; } } else { int bl = block.l; int br = block.r; block = Block((M - 1) - block.r, (M - 1) - block.l); ok = true; for (int i = block.l; i <= block.r; ++i) { ok &= (not filled[i]); } if (ok) { for (int i = block.l; i <= block.r; ++i) { filled[i] = true; } } else { cout << "NO" << endl; return 0; } } } cout << "YES" << endl; return 0; }