Unable to guess language id of .c files

[blueedgetechno]

Description

I tried submitting .c file but I received an error saying unable to access language id

Error log

$oj s https://codeforces.com/contest/1401/problem/A A.c
[INFO] online-judge-tools 10.1.2 (+ online-judge-api-client 10.3.1)
[INFO] read history from: C:\Users\blue\AppData\Local\online-judge-tools\online-judge-tools\Cache\download-history.jsonl
[INFO] found urls in history:

[INFO] problem recognized: CodeforcesProblem.from_url('https://codeforces.com/contest/1401/problem/A'): https://codeforces.com/contest/1401/problem/A
[INFO] code (180 byte):
#include<stdio.h>\r
long long int t,n,k;\r
int main()\r
{\r
        scanf("%d",&t);\r
        while(t--){\r
                scanf("%d %d",&n,&k);\r
                printf("%d\n",(n%2^k%2)*(n>k)+(k-n)*(k>=n));\r
        }\r
        return 0;\r
}\r

[INFO] load cookie from: C:\Users\blue\AppData\Local\online-judge-tools\online-judge-tools\cookie.jar
[NETWORK] GET: https://codeforces.com/contest/1401/problem/A
[NETWORK] 200 OK
[INFO] failed to guess languages from the file name
[ERROR] Matched languages were not narrowed down to one.
[INFO] You have to choose:
12 (Haskell GHC 8.10.1)
13 (Perl 5.20.1)
19 (OCaml 4.02.1)
2 (Microsoft Visual C++ 2010)
20 (Scala 2.12.8)
28 (D DMD32 v2.091.0)
3 (Delphi 7)
31 (Python 3.7.2)
32 (Go 1.14)
34 (JavaScript V8 4.8.0)
36 (Java 1.8.0_241)
4 (Free Pascal 3.0.2)
40 (PyPy 2.7 (7.2.0))
41 (PyPy 3.6 (7.2.0))
42 (GNU G++11 5.1.0)
43 (GNU GCC C11 5.1.0)
48 (Kotlin 1.3.70)
49 (Rust 1.42.0)
50 (GNU G++14 6.4.0)
51 (PascalABC.NET 3.4.2)
52 (Clang++17 Diagnostics)
54 (GNU G++17 7.3.0)
55 (Node.js 12.6.3)
59 (Microsoft Visual C++ 2017)
6 (PHP 7.2.13)
60 (Java 11.0.6)
61 (GNU G++17 9.2.0 (64 bit, msys 2))
7 (Python 2.7.15)
8 (Ruby 2.7.1)
9 (C# Mono 6.8)

Other notes

• Will you try to create a pull request?
  • no

[kmyk]

Note: this issue is blocked by #781

I recommend to use C++ instead, as a workaround.