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hi, here's my code (get WA), plz help me.
#include <iostream>

#define nn 1000000

using namespace std;

int seqL[nn];

int howL(long long n) {
if (n == 1)
return 1;
else
if (n<nn) {
if (seqL[n] == 0)
seqL[n] = 1+howL(n & 1? n*3+1: n/2);
return seqL[n];
} else
return 1+howL(n & 1? n*3+1: n ...