Compilare: user.cpp: In function ‘void getNormalization()’: user.cpp:32:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0 ; i < what.size() ; ++i) ^ user.cpp: In function ‘int main()’: user.cpp:66:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1 ; i <= what.size() ; ++i) ^ user.cpp:54:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("russky.in" , "r" , stdin); ^ user.cpp:55:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("russky.out" , "w" , stdout); ^ user.cpp:57:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &n); ^ user.cpp:58:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &z); ^ user.cpp:61:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &a[i]); ^ user.cpp:101:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &Q); ^ user.cpp:104:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &query[i].first.second); ^ user.cpp:105:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &query[i].first.first); ^