#include   <stdio.h>
#include  <locale.h>       //  çäåñü "æèâ¸ò" setlocale(LC_ALL, "rus");



int nArr[99] = {7, 3, 0, 2, 7, 11, 223, 5, 0, 3, 67, 3,  1, 0, 887};  // 74
int n = 15;


int foo();

////////////////////////////////////////////
int main()
{

    setlocale(LC_ALL, "rus");

    int n3 = foo();

    printf("Ñóììà = %d\n", n3);

return 0;
}



//////////////////////////////////////////////
int foo()
{

     int    nA2[7];
     int n2    = 1;
     int nF    = 0;
     int nPrev = 0;
     int nSum  = 0;

     for(int i = 0; i < n; i++)
     {

        if(nArr[i] == 0)
        {
           if(n2 == 1) nF = 1;
           //else        nF = 0;

           if(n2%2 == 0)
           {

              nPrev = nSum;
                      nSum = 0;
           }
           n2 ++;
        }

        if(nF == 1) nSum = nSum + nArr[i];
     }


     if(n2%2 == 1)
     {
        nSum = nPrev;
     }

return nSum;
}