#include <stdio.h>
int main() {
int a1, a2, a3;
scanf("%d", &a1);
scanf("%d", &a2);
scanf("%d", &a3);
int c1, c2, c3;
c1 = a2*2 + a3*4;
c2 = a1*2 + a3*2;
c3 = a2*2 + a1*4;
if(c1<=c2 && c1<=c3){
printf("%d", c1);
}
else if(c2<=c1 && c2<=c3){
printf("%d", c2);
}
else{
printf("%d", c3);
}
return 0;
}
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