#include<cstdio>#include<cstring>#include<algorithm>using namespace std;const double eps=1e-8;int main(){ double q1,q2,m1,t1,m2,t2,p1,p2; while(scanf("%lf%lf%lf%lf",&m1,&m2,&t1,&t2)) { if(m1==0&&m2==0&&t1==0&&t2==0) break; p1=4.19*t1*m1; p2=-2.09*t2*m2; q1=p1+335.0*m1; q2=p2+335*m2; if(q1>q2) { if(q2<p1-eps) { p1-=q2; m1+=m2; t1=p1/m1/4.19; printf("0.0 g of ice and %.1lf g of water at %.1lf Cn",m1,t1); } else { p1-=p2; double m=p1/335.0; m1+=m; m2-=m; printf("%.1lf g of ice and %.1lf g of water at 0.0 Cn",m2,m1); } } else { if(q1<p2-eps) { p2-=q1; m2+=m1; t2=-p2/m2/2.09; printf("%.1lf g of ice and 0.0 g of water at %.1lf Cn",m2,t2); } else { p2-=p1; double m=p2/335.0; m2+=m; m1-=m; printf("%.1lf g of ice and %.1lf g of water at 0.0 Cn",m2,m1); } } } return 0;}
