結果
| 問題 |
No.2923 Mayor's Job
|
| コンテスト | |
| ユーザー |
tnakao0123
|
| 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;
}
tnakao0123