Compilare: user.cpp: In function ‘void Suffix()’: user.cpp:20:39: warning: array subscript has type ‘char’ [-Wchar-subscripts] for(i = 1; i <= N; ++i) v[ s[i-1] ].push_back(i); ^ user.cpp: In function ‘bool good(int)’: user.cpp:78:38: warning: operation on ‘cnt’ may be undefined [-Wsequence-point] cnt = (d[i] >= f ? ++cnt : 1); ^ user.cpp: In function ‘int main()’: user.cpp:91:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d\n",&N,&K); ^ user.cpp:92:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s",s); ^ user.cpp: In function ‘void Suffix()’: user.cpp:51:38: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] P[i+1][idx] = (P[i][p+k] == P[i][idx+k] ? t : ++t); ^