Compilare: user.cpp: In function ‘void eulerG(int)’: user.cpp:16:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0 ; i < graph[x].size() ; ++i) ^ user.cpp: In function ‘void eulerP(int)’: user.cpp:32:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0 ; i < pattern[x].size() ; ++i) ^ user.cpp: In function ‘int main()’: user.cpp:82:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = lG[i] , k = 0 ; j < rG[i] && k < p.size() && s[j] == p[k] ; ++j , ++k) ^ user.cpp:46:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arbfind.in" , "r" , stdin); ^ user.cpp:47:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arbfind.out" , "w" , stdout); ^ user.cpp:49:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &n); ^ user.cpp:53:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &u); ^ user.cpp:56:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &x); ^ user.cpp:61:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &m); ^ user.cpp:65:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &u); ^ user.cpp:68:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &x); ^