Compilare: user.cpp: In function ‘void solve()’: user.cpp:44:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] LI[i]=LM[FL[i][0]]+1; ^ user.cpp:45:20: warning: array subscript has type ‘char’ [-Wchar-subscripts] PI[i]=PM[FL[i][0]]; ^ user.cpp:48:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (LI[i] >= LM[ FL[i][1] ]) ^ user.cpp:50:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] LM[ FL[i][1] ] = LI[i]; ^ user.cpp:51:29: warning: array subscript has type ‘char’ [-Wchar-subscripts] PM[ FL[i][1] ] = i; ^ user.cpp: In function ‘void read()’: user.cpp:19:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("raci.in","r",stdin); ^ user.cpp:20:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("raci.out","w",stdout); ^ user.cpp:21:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &K); ^