#include using namespace std; typedef signed long long ll; #undef _P #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) //------------------------------------------------------- int M; int A,B; double T,LT; double border[11][11]; double score(double t) { double ret=1; int x=A; while(x--) ret*=t; t=log(t); x=B; while(x--) ret*=t; return ret; } void solve() { int i,j,k,l,r,x,y; string s; for(x=1;x<=10;x++) { for(y=2;y<=10;y+=2) { border[x][y]=exp(-y*1.0/x); } } cin>>M; FOR(i,M) { cin>>A>>B>>T; if(B==0) { _P("%.12lf\n",pow(T,1.0/A)); } else if(B%2==1) { double L=1,R=1e9; while(R-L>5e-10) { double M=(L+R)/2; if(score(M)5e-10) { double M=(L+R)/2; if(score(M)