Compilare: main.cpp: In function 'int main()': main.cpp:22:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i<x.size()-3) ~^~~~~~~~~~~ main.cpp:24:19: warning: array subscript has type 'char' [-Wchar-subscripts] if (l[x[i]] <= n-3) ^ main.cpp:27:25: warning: array subscript has type 'char' [-Wchar-subscripts] n=n - l[x[i]]; ^ main.cpp:39:19: warning: array subscript has type 'char' [-Wchar-subscripts] if (l[x[i]] + l[x[i+1]] + l[x[i+2]] <= n) ^ main.cpp:39:31: warning: array subscript has type 'char' [-Wchar-subscripts] if (l[x[i]] + l[x[i+1]] + l[x[i+2]] <= n) ^ main.cpp:39:43: warning: array subscript has type 'char' [-Wchar-subscripts] if (l[x[i]] + l[x[i+1]] + l[x[i+2]] <= n) ^ main.cpp:43:30: warning: array subscript has type 'char' [-Wchar-subscripts] if (n-3 >= l[x[i]]) ^ main.cpp:46:29: warning: array subscript has type 'char' [-Wchar-subscripts] n = n-l[x[i]]; ^ main.cpp:48:32: warning: array subscript has type 'char' [-Wchar-subscripts] if (n-3>=l[x[i]]) ^