Compilare: user.cpp: In function ‘void ReadInput()’: user.cpp:22:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%lld", &N, &H); graph.resize(N); height.resize(N); bonus.resize(N); ^ user.cpp:25:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int x, y, l; scanf("%d%d%d", &x, &y, &l); ^