#include #define rep(i,j,k) for(int i=(int)j;i<(int)k;i++) #define itrep(i,x) for(auto i=(x).begin(); i!=(x).end();i++) #define Sort(x) sort((x).begin(),(x).end()) #define all(x) (x).begin(),(x).end() #define fi first #define se second #define vi vector #define INF INT_MAX #define INFL 1e18 #define MOD 1000000007 #define pb push_back #define MP make_pair #define PI 3.1415926535 typedef long long int ll; typedef std::pair P; int D=1; int dx[4]={0,1,0,-1},dy[4]={-1,0,1,0}; using namespace std; int main(){ ll n; cin>>n; rep(i,0,31){ rep(j,1,31){ ll zero=i,one=j-i; if(one<0)continue; //cout<<(1<