Compilare: main.cpp: In function 'void print(std::vector<int>)': main.cpp:27:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < c.size() ; i++) ~~^~~~~~~~~~ main.cpp: In function 'void putin(int)': main.cpp:37:11: warning: unused variable 'e' [-Wunused-variable] int d,e; ^ main.cpp: In function 'int main()': main.cpp:80:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cmmmc.in","r",stdin); ^ main.cpp:81:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cmmmc.out","w",stdout); ^ main.cpp:83:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&k); ^ main.cpp:87:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^