View Compilation Error

0_0_18100522_8491.cpp: In function 'int main()':
0_0_18100522_8491.cpp:4:34: error: expected ')' before '{' token
 while(~scanf("%d%d%d",&a,&v1,&v2){if(!a)puts("0");else if(v1<=v2)puts("Infinity");
                                  ^