結果
問題 |
No.2923 Mayor's Job
|
ユーザー |
![]() |
提出日時 | 2024-10-13 17:25:34 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 15 ms / 2,000 ms |
コード長 | 1,002 bytes |
コンパイル時間 | 716 ms |
コンパイル使用メモリ | 45,692 KB |
最終ジャッジ日時 | 2025-02-24 19:18:53 |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 17 |
コンパイルメッセージ
main.cpp: In function ‘int main()’: main.cpp:37:8: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 37 | scanf("%d%d", &n, &k); | ~~~~~^~~~~~~~~~~~~~~~ main.cpp:38:36: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 38 | for (int i = 0; i < n; i++) scanf("%d", hs + i); | ~~~~~^~~~~~~~~~~~~~ main.cpp:39:36: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result] 39 | for (int i = 0; i < n; i++) scanf("%d%d", xs + i, ys + i); | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
ソースコード
/* -*- coding: utf-8 -*- * * 2923.cc: No.2923 Mayor's Job - yukicoder */ #include<cstdio> #include<algorithm> #include<utility> using namespace std; /* constant */ const int MAX_N = 2000; /* typedef */ using ll = long long; using pii = pair<int,int>; /* global variables */ int hs[MAX_N], xs[MAX_N], ys[MAX_N]; pii his[MAX_N]; /* subroutines */ ll dist2(int u, int v) { int dx = xs[v] - xs[u], dy = ys[v] - ys[u]; return (ll)dx * dx + (ll)dy * dy; } /* main */ int main() { int n, k; scanf("%d%d", &n, &k); for (int i = 0; i < n; i++) scanf("%d", hs + i); for (int i = 0; i < n; i++) scanf("%d%d", xs + i, ys + i); for (int i = 0; i < n; i++) his[i] = {hs[i], i}; sort(his, his + n); ll kk = (ll)k * k; int cnt = 0; for (int i = 0; i < n; i++) { auto [hu, u] = his[i]; for (int j = i + 1; j < n; j++) { auto [hv, v] = his[j]; if (hu < hv && dist2(u, v) <= kk) { cnt++; break; } } } printf("%d\n", n - cnt); return 0; }