Compilare: user.cpp: In function ‘void solve()’: user.cpp:65:30: warning: narrowing conversion of ‘xs’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] Q[0].push(cell {xs, ys, d}); ^ user.cpp:65:30: warning: narrowing conversion of ‘ys’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] user.cpp:65:30: warning: narrowing conversion of ‘d’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] user.cpp:88:49: warning: narrowing conversion of ‘(((int)a.cell::x) + dx[k])’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] Q[C + 1].push(cell {a.x + dx[k], a.y + dy[k], k}); ^ user.cpp:88:62: warning: narrowing conversion of ‘(((int)a.cell::y) + dy[k])’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] Q[C + 1].push(cell {a.x + dx[k], a.y + dy[k], k}); ^ user.cpp:88:72: warning: narrowing conversion of ‘k’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] Q[C + 1].push(cell {a.x + dx[k], a.y + dy[k], k}); ^ user.cpp: In function ‘void read()’: user.cpp:20:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("semafoare.in", "r", stdin); ^ user.cpp:21:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &n, &m); ^ user.cpp:23:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %c\n", &xs, &ys, &c); ^ user.cpp:33:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &xd, &yd); ^ user.cpp:36:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n", A[i]); ^ user.cpp: In function ‘void write()’: user.cpp:109:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("semafoare.out", "w", stdout); ^