Compilare: user.cpp: In function ‘void solve()’: user.cpp:27:9: warning: unused variable ‘x’ [-Wunused-variable] int x = X, y = Y; ^ user.cpp:27:16: warning: unused variable ‘y’ [-Wunused-variable] int x = X, y = Y; ^ user.cpp: In function ‘void read()’: user.cpp:10:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("robotei.in", "r", stdin); ^ user.cpp:11:81: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d %d %d %d %d", &n, &m, &X, &Y, &modx, &mody, &offx, &offy); ^ user.cpp: In function ‘void write()’: user.cpp:69:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("robotei.out", "w", stdout); ^