Compilare: main.cpp: In function 'void solve()': main.cpp:66:35: warning: array subscript has type 'char' [-Wchar-subscripts] int x = t.first + a[dir[z]]; ^ main.cpp:67:36: warning: array subscript has type 'char' [-Wchar-subscripts] int y = t.second + b[dir[z]]; ^ main.cpp:73:30: warning: array subscript has type 'char' [-Wchar-subscripts] x += a[dir[z]],y += b[dir[z]]; ^ main.cpp:73:45: warning: array subscript has type 'char' [-Wchar-subscripts] x += a[dir[z]],y += b[dir[z]]; ^ main.cpp:84:26: warning: array subscript has type 'char' [-Wchar-subscripts] x += a[dir[z]],y += b[dir[z]]; ^ main.cpp:84:41: warning: array subscript has type 'char' [-Wchar-subscripts] x += a[dir[z]],y += b[dir[z]]; ^ main.cpp: In function 'int main()': main.cpp:2:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] #define FILES freopen("cobai.in","r",stdin);\ ^ main.cpp:103:5: note: in expansion of macro 'FILES' FILES ^~~~~ main.cpp:3:46: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cobai.out","w",stdout); ^ main.cpp:103:5: note: in expansion of macro 'FILES' FILES ^~~~~