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給個代媽#include <stdio.h>
int main() {
while(1){
int f;
scanf("%d",&f);
if(f>>31)break;
int st[55] = {0}, gs=0;
while(1){
int k;
scanf("%d",&k);
if(f<=50){
st[f]++;
if(!(st[f]^3))gs++;
}
if(!(f%2)){
st[f/2]+=2;
if(!(st[f/2]^3))gs++;
}
if(!k)break;
f=k;
}
printf("%d\n",gs);
}
return 0;
}
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