Compilare: user.cpp: In function ‘void createMatrice()’: user.cpp:30:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=vEuler.size(); ++i) ^ user.cpp:38:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=vEuler.size(); ++i) ^ user.cpp:39:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i+(1<<(j-1))<=vEuler.size()) ^ user.cpp: In function ‘void read()’: user.cpp:63:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:65:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &vectorTati[i]); ^ user.cpp:74:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^ user.cpp: In function ‘int main()’: user.cpp:81:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lca.in", "r", stdin); ^ user.cpp:82:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lca.out", "w", stdout); ^