Compilare: user.cpp: In function ‘void Solve()’: user.cpp:38:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a[ x + dx[j] ][ y + dy[j] ]) ^ user.cpp:38:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(a[ x + dx[j] ][ y + dy[j] ]) ^ user.cpp:42:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] ry = Find(a[ x + dx[j] ][ y + dy[j] ]); ^ user.cpp:42:51: warning: array subscript has type ‘char’ [-Wchar-subscripts] ry = Find(a[ x + dx[j] ][ y + dy[j] ]); ^ user.cpp: In function ‘void Optimize()’: user.cpp:55:33: warning: left operand of comma operator has no effect [-Wunused-value] for(short int i=N, ok = 1; i>=1, ok; --i) ^ user.cpp: In function ‘void Read()’: user.cpp:97:25: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘short int*’ [-Wformat=] scanf("%d%d", &N, &K); ^ user.cpp:97:25: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘short int*’ [-Wformat=] user.cpp: In function ‘void Solve()’: user.cpp:34:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%hd%hd", &x, &y); ^ user.cpp: In function ‘void Read()’: user.cpp:95:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("banana.in", "rt", stdin); ^ user.cpp:96:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("banana.out", "wt", stdout); ^ user.cpp:97:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &K); ^