Compilare: user.cpp: In function ‘void Precalc()’: user.cpp:22:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(now = opus[ s[i+1] ], j = 1; j <= i; ++j) ^ user.cpp: In function ‘int main()’: user.cpp:31:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("interzis.in","r",stdin); ^ user.cpp:32:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("interzis.out","w",stdout); ^ user.cpp:36:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n",&N,&L); ^ user.cpp:37:32: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets( s+1, NMax-1, stdin ); ^