Compilare: user.cpp: In function ‘void build(int, int, int)’: user.cpp:30:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < Arb[K].size(); i++) ^ user.cpp: In function ‘void Read()’: user.cpp:121:47: warning: operation on ‘cnt’ may be undefined [-Wsequence-point] A[++cnt] = make_pair(val, cnt + 1); ^ user.cpp:129:47: warning: operation on ‘cnt’ may be undefined [-Wsequence-point] B[++cnt] = make_pair(val, cnt + 1); ^