Compilare: user.cpp: In function ‘int main()’: user.cpp:49:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] printf("%d",v[x[i]][x[n-i+1]][0]); ^ user.cpp:49:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] printf("%d",v[x[i]][x[n-i+1]][0]); ^ user.cpp:60:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(k=0;k<v[x[n>>1]][x[(n>>1)+1]].size();k++) ^ user.cpp:60:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(k=0;k<v[x[n>>1]][x[(n>>1)+1]].size();k++) ^ user.cpp:60:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<v[x[n>>1]][x[(n>>1)+1]].size();k++) ^ user.cpp:61:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] update(n>>1,(v[x[n>>1]][x[(n>>1)+1]][k]*b[n>>1])%mod,dr[x[n>>1]][v[x[n>>1]][x[(n>>1)+1]][k]]+dr[x[(n>>1)+1]][v[x[n>>1]][x[(n>>1)+1]][k]],v[x[n>>1]][x[(n>>1)+1]][k]); ^ user.cpp:61:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] update(n>>1,(v[x[n>>1]][x[(n>>1)+1]][k]*b[n>>1])%mod,dr[x[n>>1]][v[x[n>>1]][x[(n>>1)+1]][k]]+dr[x[(n>>1)+1]][v[x[n>>1]][x[(n>>1)+1]][k]],v[x[n>>1]][x[(n>>1)+1]][k]); ^ user.cpp:61:68: warning: array subscript has type ‘char’ [-Wchar-subscripts] update(n>>1,(v[x[n>>1]][x[(n>>1)+1]][k]*b[n>>1])%mod,dr[x[n>>1]][v[x[n>>1]][x[(n>>1)+1]][k]]+dr[x[(n>>1)+1]][v[x[n>>1]][x[(n>>1)+1]][k]],v[x[n>>1]][x[(n>>1)+1]][k]); ^ user.cpp:61:79: warning: array subscript has type ‘char’ [-Wchar-subscripts] update(n>>1,(v[x[n>>1]][x[(n>>1)+1]][k]*b[n>>1])%mod,dr[x[n>>1]][v[x[n>>1]][x[(n>>1)+1]][k]]+dr[x[(n>>1)+1]][v[x[n>>1]][x[(n>>1)+1]][k]],v[x[n>>1]][x[(n>>1)+1]][k]); ^ user.cpp:61:92: warning: array subscript has type ‘char’ [-Wchar-subscripts] update(n>>1,(v[x[n>>1]][x[(n>>1)+1]][k]*b[n>>1])%mod,dr[x[n>>1]][v[x[n>>1]][x[(n>>1)+1]][k]]+dr[x[(n>>1)+1]][v[x[n>>1]][x[(n>>1)+1]][k]],v[x[n>>1]][x[(n>>1)+1]][k]); ^ user.cpp:61:112: warning: array subscript has type ‘char’ [-Wchar-subscripts] update(n>>1,(v[x[n>>1]][x[(n>>1)+1]][k]*b[n>>1])%mod,dr[x[n>>1]][v[x[n>>1]][x[(n>>1)+1]][k]]+dr[x[(n>>1)+1]][v[x[n>>1]][x[(n>>1)+1]][k]],v[x[n>>1]][x[(n>>1)+1]][k]); ^ user.cpp:61:123: warning: array subscript has type ‘char’ [-Wchar-subscripts] update(n>>1,(v[x[n>>1]][x[(n>>1)+1]][k]*b[n>>1])%mod,dr[x[n>>1]][v[x[n>>1]][x[(n>>1)+1]][k]]+dr[x[(n>>1)+1]][v[x[n>>1]][x[(n>>1)+1]][k]],v[x[n>>1]][x[(n>>1)+1]][k]); ^ user.cpp:61:136: warning: array subscript has type ‘char’ [-Wchar-subscripts] update(n>>1,(v[x[n>>1]][x[(n>>1)+1]][k]*b[n>>1])%mod,dr[x[n>>1]][v[x[n>>1]][x[(n>>1)+1]][k]]+dr[x[(n>>1)+1]][v[x[n>>1]][x[(n>>1)+1]][k]],v[x[n>>1]][x[(n>>1)+1]][k]); ^ user.cpp:61:151: warning: array subscript has type ‘char’ [-Wchar-subscripts] update(n>>1,(v[x[n>>1]][x[(n>>1)+1]][k]*b[n>>1])%mod,dr[x[n>>1]][v[x[n>>1]][x[(n>>1)+1]][k]]+dr[x[(n>>1)+1]][v[x[n>>1]][x[(n>>1)+1]][k]],v[x[n>>1]][x[(n>>1)+1]][k]); ^ user.cpp:61:164: warning: array subscript has type ‘char’ [-Wchar-subscripts] update(n>>1,(v[x[n>>1]][x[(n>>1)+1]][k]*b[n>>1])%mod,dr[x[n>>1]][v[x[n>>1]][x[(n>>1)+1]][k]]+dr[x[(n>>1)+1]][v[x[n>>1]][x[(n>>1)+1]][k]],v[x[n>>1]][x[(n>>1)+1]][k]); ^ user.cpp:69:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(k=0;k<v[x[i-1]][x[n+1-(i-1)]].size();k++) ^ user.cpp:69:45: warning: array subscript has type ‘char’ [-Wchar-subscripts]