Main.cpp: In function 'int main()':
Main.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
13 | scanf("%d%d", &n, &k);
| ~~~~~^~~~~~~~~~~~~~~~
Main.cpp:17:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
17 | scanf("%d", &lang[i]), pre[lang[i]]++, res = max(res, pre[lang[i]]);
| ~~~~~^~~~~~~~~~~~~~~~
Main.cpp:21:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
21 | scanf("%d", &par);
| ~~~~~^~~~~~~~~~~~