Compilare: user.cpp: In function ‘int main()’: user.cpp:45:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] fr[sir[i]][i]++; ^ user.cpp:69:46: warning: array subscript has type ‘char’ [-Wchar-subscripts] fprintf(fout, " %lld\n", rez[0] * fr[ch][k] + rez[1] * fr[flipch(ch)][k] + fr[flipch(ch)][p]); ^ user.cpp:69:75: warning: array subscript has type ‘char’ [-Wchar-subscripts] fprintf(fout, " %lld\n", rez[0] * fr[ch][k] + rez[1] * fr[flipch(ch)][k] + fr[flipch(ch)][p]); ^ user.cpp:69:95: warning: array subscript has type ‘char’ [-Wchar-subscripts] fprintf(fout, " %lld\n", rez[0] * fr[ch][k] + rez[1] * fr[flipch(ch)][k] + fr[flipch(ch)][p]); ^ user.cpp:71:46: warning: array subscript has type ‘char’ [-Wchar-subscripts] fprintf(fout, " %lld\n", rez[0] * fr[ch][k] + rez[1] * fr[flipch(ch)][k] + fr[ch][p]); ^ user.cpp:71:75: warning: array subscript has type ‘char’ [-Wchar-subscripts] fprintf(fout, " %lld\n", rez[0] * fr[ch][k] + rez[1] * fr[flipch(ch)][k] + fr[ch][p]); ^ user.cpp:71:87: warning: array subscript has type ‘char’ [-Wchar-subscripts] fprintf(fout, " %lld\n", rez[0] * fr[ch][k] + rez[1] * fr[flipch(ch)][k] + fr[ch][p]); ^ user.cpp:39:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &k, &q); ^ user.cpp:57:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lld", &n); ^