提交记录 29634 - Judge Duck Online

用户	题目	状态	得分	用时	内存	语言	代码长度
hujizhe01	1000. 测测你的 A+B	Compile Error	0	0 ns	0 KB	C++	115 B

提交时间	评测时间
2026-08-07 18:40:41	2026-08-07 18:40:44

代码

#include <bits/stdc++.h>
using namspace std;
int a , b;
int main () {
cin >> a >> b;
cout << plus(a,b);
return 0;
}

评测结果

Compilation

N/A

Compile Error

Score: N/A

显示更多

jp_data/tasks/700d29e6924c11f1aa5f39b1dd43d4ae/contestant.cpp:2:7: error: expected nested-name-specifier before ‘namspace’
    2 | using namspace std;
      |       ^~~~~~~~
jp_data/tasks/700d29e6924c11f1aa5f39b1dd43d4ae/contestant.cpp: In function ‘int main()’:
jp_data/tasks/700d29e6924c11f1aa5f39b1dd43d4ae/contestant.cpp:5:1: error: ‘cin’ was not declared in this scope; did you mean ‘std::cin’?
    5 | cin >> a >> b;
      | ^~~
      | std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:75,
                 from jp_data/tasks/700d29e6924c11f1aa5f39b1dd43d4ae/contestant.cpp:1:
/usr/include/c++/9/iostream:60:18: note: ‘std::cin’ declared here
   60 |   extern istream cin;  /// Linked to standard input
      |                  ^~~
jp_data/tasks/700d29e6924c11f1aa5f39b1dd43d4ae/contestant.cpp:6:1: error: ‘cout’ was not declared in this scope; did you mean ‘std::cout’?
    6 | cout << plus(a,b);
      | ^~~~
      | std::cout
In file included from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:75,
                 from jp_data/tasks/700d29e6924c11f1aa5f39b1dd43d4ae/contestant.cpp:1:
/usr/include/c++/9/iostream:61:18: note: ‘std::cout’ declared here
   61 |   extern ostream cout;  /// Linked to standard output
      |                  ^~~~
jp_data/tasks/700d29e6924c11f1aa5f39b1dd43d4ae/contestant.cpp:6:9: error: ‘plus’ was not declared in this scope; did you mean ‘std::plus’?
    6 | cout << plus(a,b);
      |         ^~~~
      |         std::plus
In file included from /usr/include/c++/9/string:48,
                 from /usr/include/c++/9/bits/locale_classes.h:40,
                 from /usr/include/c++/9/bits/ios_base.h:41,
                 from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/istream:38,
                 from /usr/include/c++/9/sstream:38,
                 from /usr/include/c++/9/complex:45,
                 from /usr/include/c++/9/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/9/bits/stdc++.h:54,
                 from jp_dat