結果
| 問題 |
No.1374 Absolute Game
|
| コンテスト | |
| ユーザー |
vjudge1
|
| 提出日時 | 2024-10-19 02:01:13 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 26 ms / 2,000 ms |
| コード長 | 1,605 bytes |
| コンパイル時間 | 2,076 ms |
| コンパイル使用メモリ | 195,376 KB |
| 最終ジャッジ日時 | 2025-02-24 21:24:42 |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 26 |
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:12:8: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
12 | scanf("%lld", &n);
| ~~~~~^~~~~~~~~~~~
main.cpp:14:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
14 | scanf("%lld", a + i);
| ~~~~~^~~~~~~~~~~~~~~
ソースコード
#include <bits/stdc++.h>
using namespace std;
#define N 100005
typedef long long ll;
typedef unsigned long long ull;
ll n, a[N], s[2], ans = LONG_LONG_MIN, s1, s2;
int main() {
#ifndef ONLINE_JUDGE
freopen("admin.in", "r", stdin);
// freopen("admin.out", "w", stdout);
#endif
scanf("%lld", &n);
for (int i = 1; i <= n; i++)
scanf("%lld", a + i);
sort(a + 1, a + 1 + n);
if (n == 1)
return printf("%lld", abs(a[1])), 0;
int l, r, now;
s1 = s2 = LONG_LONG_MAX;
if (a[1] < 0) {
if (a[2] < 0) {
s[0] = s[1] = 0;
now = 0;
for (int i = 1; i <= n; i++, now ^= 1)
s[now] += a[i];
s1 = abs(s[0]) - abs(s[1]);
}
if (a[n] >= 0) {
s[0] = s[1] = 0;
l = 1, r = n, now = 0;
while (l <= r) {
if (!(now & 1))
s[0] += a[l++];
else
s[1] += a[r--];
now ^= 1;
}
s2 = abs(s[0]) - abs(s[1]);
}
}
if (s1 == s2 && s1 == LONG_LONG_MAX)
s1 = s2 = 0;
ans = max(ans, min(s1, s2));
s1 = s2 = LONG_LONG_MAX;
if (a[n] >= 0) {
if (a[1] < 0) {
s[0] = s[1] = 0;
l = 1, r = n, now = 0;
while (l <= r) {
if (!(now & 1))
s[0] += a[r--];
else
s[1] += a[l++];
now ^= 1;
}
s1 = abs(s[0]) - abs(s[1]);
}
if (a[n - 1] >= 0) {
s[0] = s[1] = 0;
now = 0;
for (int i = n; i >= 1; i--, now ^= 1)
s[now] += a[i];
s2 = abs(s[0]) - abs(s[1]);
}
}
if (s1 == s2 && s1 == LONG_LONG_MAX)
s1 = s2 = 0;
ans = max(ans, min(s1, s2));
printf("%lld", ans);
return 0;
}
vjudge1