結果
| 問題 |
No.3281 Pacific White-sided Dolphin vs Monster
|
| コンテスト | |
| ユーザー |
tnakao0123
|
| 提出日時 | 2025-09-28 11:22:03 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 1,654 bytes |
| コンパイル時間 | 937 ms |
| コンパイル使用メモリ | 60,872 KB |
| 実行使用メモリ | 8,900 KB |
| 最終ジャッジ日時 | 2025-09-28 11:22:09 |
| 合計ジャッジ時間 | 4,997 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 49 WA * 1 |
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:50:8: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
50 | scanf("%d", &n);
| ~~~~~^~~~~~~~~~
main.cpp:51:36: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
51 | for (int i = 0; i < n; i++) scanf("%lld", hs + i);
| ~~~~~^~~~~~~~~~~~~~~~
ソースコード
/* -*- coding: utf-8 -*-
*
* 3281.cc: No.3281 Pacific White-sided Dolphin vs Monster - yukicoder
*/
#include<cstdio>
#include<vector>
#include<algorithm>
using namespace std;
/* constant */
const int MAX_N = 100000;
const int BN = 60;
const int D = 4;
const int DBN = (BN + D - 1) / D;
const int DBITS = 1 << DBN;
const int DMSK = DBITS - 1;
const long long LINF = 1LL << 62;
/* typedef */
using ll = long long;
using vl = vector<ll>;
/* global variables */
int bnums[DBITS];
ll hs[MAX_N];
/* subroutines */
int bitnum(ll n) {
int b = 0;
for (int i = 0; i < D; i++, n >>= DBN) b += bnums[n & DMSK];
return b;
}
/* main */
int main() {
bnums[0] = 0;
for (int bits = 1, msb = 1; bits < DBITS; bits++) {
if ((msb << 1) <= bits) msb <<= 1;
bnums[bits] = bnums[bits ^ msb] + 1;
}
int n;
scanf("%d", &n);
for (int i = 0; i < n; i++) scanf("%lld", hs + i);
vl hv(hs, hs + n);
int cnt = 0;
for (int i = 0; ! hv.empty() && i < BN; i++) {
cnt++;
ll bi = 1LL << i;
vl hv0, hv1;
for (auto h: hv) {
if ((h & bi) != 0) hv1.push_back(h);
else hv0.push_back(h);
}
if (! hv1.empty()) {
int minb = BN + 1;
ll minh = LINF;
for (auto h: hv1) {
int b = bitnum(h);
if (minb > b || (minb == b && minh > h)) minb = b, minh = h;
}
for (auto h: hv1) {
if (h == minh) {
if (h > bi) hv0.push_back(h - bi);
minh = -1;
}
else
hv0.push_back(h + bi);
}
swap(hv, hv0);
//printf(" i=%d:", i);
//for (auto h: hv) printf(" %lld", h); putchar('\n');
}
}
printf("%d\n", cnt + (int)hv.size());
return 0;
}
tnakao0123