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#include'stdio.h' int main(void) { long long int n; scanf('%d' | CODING SOLUTION - Placement Jobs & Materials

#include"stdio.h"
int main(void) {
long long int n;
scanf("%d",&n);
int sum = 0;
int r = 0;
while(n>0){
r = n%10;
if(r%2==0){
sum+=r;
}
n/=10;
}
printf("%d\n",sum);
return 0;
}

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