結果
問題 | No.168 ものさし |
ユーザー | nebukuro09 |
提出日時 | 2016-09-27 14:59:41 |
言語 | C++11 (gcc 11.4.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 1,801 bytes |
コンパイル時間 | 374 ms |
コンパイル使用メモリ | 39,520 KB |
実行使用メモリ | 10,112 KB |
最終ジャッジ日時 | 2024-11-21 07:16:27 |
合計ジャッジ時間 | 4,209 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | WA | - |
testcase_01 | AC | 75 ms
5,248 KB |
testcase_02 | AC | 1 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 1 ms
5,248 KB |
testcase_05 | AC | 545 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 770 ms
5,248 KB |
testcase_08 | AC | 489 ms
5,248 KB |
testcase_09 | AC | 3 ms
5,248 KB |
testcase_10 | AC | 4 ms
5,248 KB |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | AC | 110 ms
5,248 KB |
testcase_16 | AC | 88 ms
5,248 KB |
testcase_17 | AC | 77 ms
5,248 KB |
testcase_18 | AC | 48 ms
5,248 KB |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
コンパイルメッセージ
main.cpp: In function ‘int main()’: main.cpp:58:13: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘long long int*’ [-Wformat=] 58 | scanf("%d", &x[i]); | ~^ ~~~~~ | | | | | long long int* | int* | %lld main.cpp:59:13: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘long long int*’ [-Wformat=] 59 | scanf("%d", &y[i]); | ~^ ~~~~~ | | | | | long long int* | int* | %lld main.cpp:56:8: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 56 | scanf("%d", &N); | ~~~~~^~~~~~~~~~ main.cpp:58:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 58 | scanf("%d", &x[i]); | ~~~~~^~~~~~~~~~~~~ main.cpp:59:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 59 | scanf("%d", &y[i]); | ~~~~~^~~~~~~~~~~~~
ソースコード
#include <stdio.h> #include <vector> class UnionFind { private: std::vector<int> table; public: UnionFind(int n) { table = std::vector<int> (n, -1); } ~UnionFind(){}; void unite(int x, int y) { x = find(x); y = find(y); if (x == y) return; if (table[x] >= table[y]) { table[y] += table[x]; table[x] = y; } else { table[x] += table[y]; table[y] = x; } } int find(int x) { if (table[x] < 0) return x; return table[x] = find(table[x]); // 根を張り替えながら再帰的に根ノードを探す } }; int N; long long int dists[1001][1001]; long long int f(long long int x0, long long int y0, long long int x1, long long int y1) { return (x0-x1)*(x0-x1) + (y0-y1)*(y0-y1); } bool ok(long long int m) { UnionFind uf = UnionFind(N); for (int i = 0; i < N; i++) for (int j = i+1; j < N; j++) if (dists[i][j] <= m) uf.unite(i, j); return uf.find(0) == uf.find(N-1); } long long int sqrtint(long long int n) { long long int i; for (i = 0; n > 0; i++) n -= i * 2 + 1; return i-1; } int main() { long long int x[1000]; long long int y[1000]; scanf("%d", &N); for (int i = 0; i < N; i++) { scanf("%d", &x[i]); scanf("%d", &y[i]); } long long int high = 1000000000000000000*2; long long int low = 0; long long int middle; for (int i = 0; i < N; i++) for (int j = i+1; j < N; j++) dists[i][j] = f(x[i], y[i], x[j], y[j]); while (high-low > 1) { middle = (high+low)/2; if (ok(middle)) high = middle; else low = middle; } if (!ok(high)) high = low; long long int sqrt = sqrtint(high); if (sqrt*sqrt < high) sqrt++; int ans = sqrt/10*10; if (sqrt%10 > 0) ans += 10; printf("%d\n", ans); return 0; }