Compilare: user.cpp:10:26: warning: left shift count >= width of type [enabled by default] const long long z = 1 << 32; ^ user.cpp: In function ‘int get(long long int)’: user.cpp:25:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int it = 0; it < h[aux].size(); it++) ^ user.cpp: In function ‘void dfs(int, long long int)’: user.cpp:49:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int it = 0; it < g[x].size(); it++) ^ user.cpp: In function ‘int main()’: user.cpp:57:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arbore3.in", "r", stdin); ^ user.cpp:58:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arbore3.out", "w", stdout); ^ user.cpp:60:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %lld", &n, &s); ^ user.cpp:65:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %lld", &t, &ar[i]); ^