Compilare: user.cpp: In function ‘int main()’: user.cpp:145:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (id == Time[nod].size()) id = 0; ^ user.cpp:124:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:128:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &len); ^ user.cpp:132:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &V[i][j]); ^ user.cpp:142:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x, &y, &p[i].t); ^