#include <stdio.h>
int schet(int a,int b, int c);
int main()
{
    printf("%d",schet(4,4,4));
    getchar();
    return 0;    
}
int schet(int a,int b, int c)
{
    int count;
    count=a*b*c-((a-2)*(b-2)*(c-2));
    return count;
}

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