Compilare: user.cpp: In function ‘int Search(int, int)’: user.cpp:12:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < v[X].size(); i++ ) ^ user.cpp: In function ‘int match(int)’: user.cpp:21:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < v[nod].size(); i++ ){ ^ user.cpp:30:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < v[nod].size(); i++ ){ ^ user.cpp: In function ‘int main()’: user.cpp:41:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for( fscanf( fin, "%d", &T ); T != 0; T-- ){ ^ user.cpp:42:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d%d", &M, &N, &k ); ^ user.cpp:45:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &a, &b ); ^