Compilare: user.cpp: In function ‘void read()’: user.cpp:26:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("traseu3.in", "r", stdin); ^ user.cpp:27:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &k); ^ user.cpp:28:67: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d %d %d", &m.x, &m.y, &m.z, &f.x, &f.y, &f.z); ^ user.cpp:33:44: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &r.x, &r.y, &r.z); ^ user.cpp: In function ‘void write()’: user.cpp:71:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("traseu3.out", "w", stdout); ^ user.cpp:82:52: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (okc(x + dx[d], y + dy[d], z + dz[d]) && dp[x + dx[d]][y + dy[d]][z + dz[d]].F == len ^ user.cpp:82:52: warning: ‘b’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:82:52: warning: ‘a’ may be used uninitialized in this function [-Wmaybe-uninitialized]