#include <stdio.h>
int main() {
int a,b,c,i,j=0;
for(b=2,c=1;100<=a,a<=1000;){
a=3*b+2*c;
c=b;
b=a;
if(100<=a&&a<=1000){
j=j+1;
}
}
return 0;
}
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