Compilare: user.cpp: In function ‘int main()’: user.cpp:24:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] nextt[n][s[n]]=n; ^ user.cpp:28:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] nextt[i][s[i]]=i; ^ user.cpp:36:41: warning: array subscript has type ‘char’ [-Wchar-subscripts] sp=sp-subsir[nextt[i+1][s[i]]]+subsir[i]; ^ user.cpp:20:13: warning: unused variable ‘cop’ [-Wunused-variable] int cop=k; ^ user.cpp:21:28: warning: unused variable ‘sum’ [-Wunused-variable] unsigned long long sum=0; ^ user.cpp:42:29: warning: unused variable ‘cp’ [-Wunused-variable] int pz=nextt[1][j], cp=0, ta=0; ^