#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;	 
}