#include<stdio.h> int main() { int n,x,a,b,c; scanf("%d",&n); while(n--) { scanf("%d %d %d",&a,&b,&c); for(x=1000;x<=9999;x++){ if(x%a==0&&(x+1)%b==0&&(x+2)%c==0) break; if(x<9999) printf("%d\n",x); else printf("Impossible\n"); } } return 0; }