Foo and Exams

#include <bits/stdc++.h>
using namespace std;
#define PB push_back
#define ZERO (1e-10)
#define INF (1<<29)
#define CL(A,I) (memset(A,I,sizeof(A)))
#define DEB printf("DEB!\n");
#define D(X) cout<<"  "<<#X": "<<X<<endl;
#define EQ(A,B) (A+ZERO>B&&A-ZERO<B)
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef pair<int,int> ii;
typedef vector<ii> vii;
#define IN(n) int n;scanf("%d",&n);
#define FOR(i, m, n) for (int i(m); i < n; i++)
#define REP(i, n) FOR(i, 0, n)
#define F(n) REP(i, n)
#define FF(n) REP(j, n)
#define FT(m, n) FOR(k, m, n)
#define aa first
#define bb second
void ga(int N,int *A){F(N)scanf("%d",A+i);}
ll a,b,c,d,K;
#define EV(t) (a*t*t*t+b*t*t+c*t+d)
bool ok(ll t){return EV(t)>K;}
ll bs(ll B=0,ll E=INF){
    ll M;
    while(B<E)
        if(ok(M=(B+E)>>1))E=M;
        else B=M+1;
    return max(B-1,0ll);
}
int main(void){
    IN(tt)F(tt)
        scanf("%lld%lld%lld%lld%lld",&a,&b,&c,&d,&K),printf("%lld\n",bs(0,8e5));
    return 0;
}