結果

問題 No.505 カードの数式2
コンテスト
ユーザー Ronlynes
提出日時 2017-08-23 12:41:36
言語 C++11
(gcc 15.2.0 + boost 1.89.0)
コンパイル:
g++-15 -O2 -lm -std=gnu++11 -Wuninitialized -DONLINE_JUDGE -o a.out _filename_
実行:
./a.out
結果
WA  
実行時間 -
コード長 1,097 bytes
記録
記録タグの例:
初AC ショートコード 純ショートコード 純主流ショートコード 最速実行時間
コンパイル時間 348 ms
コンパイル使用メモリ 72,688 KB
実行使用メモリ 6,400 KB
最終ジャッジ日時 2026-05-04 10:19:32
合計ジャッジ時間 1,443 ms
ジャッジサーバーID
（参考情報） 		judge1_1 / judge2_0
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 25 WA * 4
権限があれば一括ダウンロードができます
コンパイルメッセージ
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/string:53,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/locale_classes.h:42,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/ios_base.h:43,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/ios:46,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/ostream.h:43,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/ostream:42,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/iostream:43,
                 from main.cpp:1:
In function 'const _Tp& std::max(const _Tp&, const _Tp&) [with _Tp = long long int]',
    inlined from 'int main()' at main.cpp:29:16:
/home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/stl_algobase.h:263:7: warning: 'tmp_ma' may be used uninitialized [-Wmaybe-uninitialized]
  263 |       if (__a < __b)
      |       ^~
main.cpp: In function 'int main()':
main.cpp:17:15: note: 'tmp_ma' was declared here
   17 |     long long tmp_ma, tmp_mi;
      |               ^~~~~~
In function 'const _Tp& std::max(const _Tp&, const _Tp&) [with _Tp = long long int]',
    inlined from 'int main()' at main.cpp:29:16:
/home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/stl_algobase.h:263:7: warning: 'tmp_mi' may be used uninitialized [-Wmaybe-uninitialized]
  263 |       if (__a < __b)
      |       ^~
main.cpp: In function 'int main()':
main.cpp:17:23: note: 'tmp_mi' was declared here
   17 |     long long tmp_ma, tmp_mi;
      |                       ^~~~~~

ソースコード

diff #
raw source code 

#include <iostream>
using namespace std;
int main(void){
    int n, a[100];
    cin >> n;
    for(int i=0; i<n; i++){
        cin >> a[i];
    }
    long long sum, ma, mi;
    if(a[1] != 0){
        ma = max(max(max(a[0]*a[1],a[0]+a[1]), a[0]-a[1]),a[0]/a[1]);
        mi = min(min(min(a[0]*a[1],a[0]+a[1]), a[0]-a[1]), a[0]/a[1]);
    }else{
        ma = max(max(a[0]*a[1],a[0]+a[1]), a[0]-a[1]);
        mi = min(min(a[0]*a[1],a[0]+a[1]), a[0]-a[1]);
    }
    long long tmp_ma, tmp_mi;
    for(int i=2; i<n; i++){
        if(a[i] != 0){
            tmp_ma = max(max(max(max(ma*a[i],ma+a[i]), ma-a[i]),ma/a[i]), max(max(max(mi*a[i],mi+a[i]), mi-a[i]),mi/a[i]));
            tmp_mi = min(min(min(min(ma*a[i],ma+a[i]), ma-a[i]),ma/a[i]), min(min(min(mi*a[i],mi+a[i]), mi-a[i]),mi/a[i]));
        }else{
            ma = max(max(max(ma*a[i],ma+a[i]), ma-a[i]), max(max(mi*a[i],mi+a[i]), mi-a[i]));
            mi = min(min(min(ma*a[i],ma+a[i]), ma-a[i]), min(min(mi*a[i],mi+a[i]), mi-a[i]));
        }
        ma = tmp_ma;
        mi = tmp_mi;
    }
    cout << max(ma, mi) << endl;
    return 0;
}
0