#include<stdio.h> int main() { int i,n; while(~scanf("%d",&n)) { if(n==0) break; int a[n]; for(i=0;i<n;i++) { scanf("%d",&a[i]); } int sum=0; for(i=0;i<n;i++) { sum+=a[i]; } printf("%d\n",sum); } }
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