#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

#define rd(v) int v=0;{int _c;while(_c=*rp++-48,_c>=0)v=v*10+_c;}

int main(){
	char buf[64];
	read(0,buf,sizeof buf);
	char*rp=buf;
	rd(n);
	rd(p);
	unsigned z=n*(100-p)/100;
	char*wp=buf+sizeof buf;
	do*--wp=z%10+48;while(z/=10);
	write(1,wp,buf+sizeof buf-wp);
	_exit(0);
	return 0;
}