Compilare: user.cpp: In function ‘int main()’: user.cpp:68:17: warning: variable ‘tt’ set but not used [-Wunused-but-set-variable] int tt; ^ user.cpp:130:49: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (nr[j - 1] < pos[j - 1].size()) { ^ user.cpp:124:9: warning: variable ‘sum’ set but not used [-Wunused-but-set-variable] int sum = 0; ^ user.cpp:48:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("teroristi.in" , "r" , stdin); ^ user.cpp:49:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("teroristi.out" , "w" , stdout); ^ user.cpp:51:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d" , &n , &m); ^ user.cpp:56:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s" , cuv + 1); ^ user.cpp:62:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s %s" , &lit1 , &lit2); ^