#include using namespace std; #define repl(i,a,b) for(int i=(int)(a);i<(int)(b);i++) #define rep(i,n) repl(i,0,n) #define mp(a,b) make_pair((a),(b)) #define pb(a) push_back((a)) #define all(x) (x).begin(),(x).end() #define uniq(x) sort(all(x)),(x).erase(unique(all(x)),end(x)) #define fi first #define se second #define dbg(...) _dbg(#__VA_ARGS__",", __VA_ARGS__) void _dbg(string){cout< void _dbg(string s,H h,T... t){int l=s.find(',');cout< ostream& operator<<(ostream& o, const pair &p){o<<"("< ostream& operator<<(ostream& o, const vector &v){o<<"[";for(T t:v){o<>n>>m; fib[0]=0; fib[1]=1; rep(i,n) fib[i+2]=fib[i+1]+fib[i]; long d = fib[n] - m; if(d<0) cout << -1 << endl; else if(d==0) cout << 0 << endl; else { int cnt = 0; for(int i=n; i>0; i--){ if(d - fib[i]>=0){ d -= fib[i]; cnt++; } } if(d==0) cout << cnt << endl; else cout << -1 << endl; } return 0; }