Compilare: main.cpp: In function 'int main()': main.cpp:28:24: warning: array subscript has type 'char' [-Wchar-subscripts] 28 | for(i=0;i<n;i++)++p[s[i]],su[0][i]=s[i]; | ^ main.cpp:40:10: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 40 | {for(auto j:v[i]) | ^~~ main.cpp:41:32: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 41 | c[p[su[k][j]]++]=j;v[i].clear();} | ^