Compilare: user.cpp: In function ‘void preprocesare()’: user.cpp:70:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i <= 2 * E.size() + 10; ++i) ^ user.cpp:74:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<E.size(); ++i) ^ user.cpp:77:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<= E.size() - (1<<k) + 1; ++i) ^ user.cpp: In function ‘void read()’: user.cpp:118:29: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘short unsigned int*’ [-Wformat=] scanf("%d%d", &a, &v); ^ user.cpp:104:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("atac.in", "rt", stdin); ^ user.cpp:105:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("atac.out", "wt", stdout); ^ user.cpp:106:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &N, &M, &P); ^ user.cpp:118:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &a, &v); ^ user.cpp:122:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d", &x, &y, &A, &B, &C, &D); ^