Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:65:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<A[nod].sz;i++) ^ main.cpp:69:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<a[nod].sz;i++) ^ main.cpp: In function 'int main()': main.cpp:78:10: warning: unused variable 'j' [-Wunused-variable] int i, j; ^ main.cpp: In function 'void citire()': main.cpp:25:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("stramosi.in", "r", stdin); ^ main.cpp:26:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &n, &m); ^ main.cpp:28:43: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(i=1;i<=n;i++) scanf("%d ", &tata[i]); ^ main.cpp:40:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &xx, &yy); ^ main.cpp: In function 'int main()': main.cpp:82:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("stramosi.out", "w", stdout); ^