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- #include <iostream>
- #include <cstdio>
- #include <algorithm>
- using namespace std;
- int main()
- {
- long long y=0;
- int x[100005],z,n;
- scanf("%d",&n);
- for(int i=0;i<n;i++){
- scanf("%d",&x[i]);
- y +=x[i];
- }
- if(y%2==0){
- printf("%lld\n",y);
- }
- else{
- sort(x,x+n);
- for(int i=0;i<n;i++){
- if(x[i]%2!=0){
- z = y - x[i];
- break;
- }
- }
- printf("%d\n",z);
- }
- return 0;
- }
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