結果

問題 No.280 歯車の問題(1)
ユーザー MisterMister
提出日時 2020-04-13 21:38:20
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 3 ms / 1,000 ms
コード長 420 bytes
コンパイル時間 651 ms
コンパイル使用メモリ 69,596 KB
最終ジャッジ日時 2025-01-09 18:12:53
ジャッジサーバーID
(参考情報)
judge5 / judge5
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ファイルパターン 結果
other AC * 31
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 /usr/include/c++/13/iostream:41,
                 from main.cpp:1:
In member function ‘std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char; _Traits = std::char_traits<char>]’,
    inlined from ‘void solve()’ at main.cpp:18:30:
/usr/include/c++/13/ostream:204:25: warning: ‘l’ may be used uninitialized [-Wmaybe-uninitialized]
  204 |       { return _M_insert(__n); }
      |                ~~~~~~~~~^~~~~
main.cpp: In function ‘void solve()’:
main.cpp:10:10: note: ‘l’ was declared here
   10 |     lint l, r;
      |          ^
In member function ‘std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char; _Traits = std::char_traits<char>]’,
    inlined from ‘void solve()’ at main.cpp:18:18:
/usr/include/c++/13/ostream:204:25: warning: ‘r’ may be used uninitialized [-Wmaybe-uninitialized]
  204 |       { return _M_insert(__n); }
      |                ~~~~~~~~~^~~~~
main.cpp: In function ‘void solve()’:
main.cpp:10:13: note: ‘r’ was declared here
   10 |     lint l, r;
      |             ^

ソースコード

diff #

#include <iostream>
#include <vector>

using lint = long long;

void solve() {
    int n;
    std::cin >> n;

    lint l, r;
    for (int i = 0; i < n; ++i) {
        lint x;
        std::cin >> x;
        if (i == 0) l = x;
        if (i == n - 1) r = x;
    }

    std::cout << r << "/" << l << std::endl;
}

int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}
0