Compilare: user.cpp: In function ‘int main()’: user.cpp:77:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] pini[a[i][j]]=i; ^ user.cpp:78:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] pinj[a[i][j]]=j; ^ user.cpp:81:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<cuv.size();k++) ^ user.cpp:83:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] q.push(make_pair(pini[cuv[k]],pinj[cuv[k]])); ^ user.cpp:83:54: warning: array subscript has type ‘char’ [-Wchar-subscripts] q.push(make_pair(pini[cuv[k]],pinj[cuv[k]])); ^ user.cpp:86:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] mat[pini[cuv[k]]][pinj[cuv[k]]][k]=1; ^ user.cpp:86:46: warning: array subscript has type ‘char’ [-Wchar-subscripts] mat[pini[cuv[k]]][pinj[cuv[k]]][k]=1; ^ user.cpp:94:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=1;k<cuv.size();k++) ^ user.cpp:105:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] q.push(make_pair(pini[cuv[k]],pinj[cuv[k]])); ^ user.cpp:105:54: warning: array subscript has type ‘char’ [-Wchar-subscripts] q.push(make_pair(pini[cuv[k]],pinj[cuv[k]])); ^ user.cpp:106:43: warning: array subscript has type ‘char’ [-Wchar-subscripts] q.push(make_pair(pini[cuv[k-1]],pinj[cuv[k-1]])); ^ user.cpp:106:58: warning: array subscript has type ‘char’ [-Wchar-subscripts] q.push(make_pair(pini[cuv[k-1]],pinj[cuv[k-1]])); ^