Compilare: main.cpp: In function 'int main()': main.cpp:69:12: warning: array subscript has type 'char' [-Wchar-subscripts] 69 | if(f[nr] == 0){ | ^~ main.cpp:70:11: warning: array subscript has type 'char' [-Wchar-subscripts] 70 | f[nr] = 1; | ^~ main.cpp:75:13: warning: array subscript has type 'char' [-Wchar-subscripts] 75 | app[nr] += p; | ^~ main.cpp:77:13: warning: array subscript has type 'char' [-Wchar-subscripts] 77 | app[nr] -= p; | ^~ main.cpp:43:16: warning: unused variable 'j' [-Wunused-variable] 43 | int n, m, i, j, sn, si; | ^