#include <stdio.h>
int main(){
int y,f,n;
//int v1;
//int v2;
int t=0;
int v;
if (scanf("%d",&n)!=0){
//v1 = 100*y+f;
//v1 = 100*f+y;
//v2 = 200*y+2*f+n;
//n = 98*f -199*y;
for (f=0;f<=99;f++){
for (y=0;y<=99;y++){
v = 98*f -199*y;
//if (f==51 && y==25){printf("f=%d y=%d v = %d n=%d\n",f,y,v,n);}
if (v==n){t=1;printf("%d.%d",y,f);break;}
}
}
if (t!=1){printf("No Solution");}
}else{
printf("输入信息错误");
}
return 0;
}
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