#include <stdio.h>
int main() {
    int n,i,x,r=0,v=1001,c=0;scanf("%d",&n);
    for(i=0;i<n;++i){scanf("%d",&x);if(x&1){++c;if(x<v)v=x;}r+=x;}if(c&1)r-=v;
    return !r?!printf("NIESTETY\n"):!printf("%d\n",r);
}

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#include <stdio.h>
int main() {
    int n,i,x,r=0,v=1001,c=0;scanf("%d",&n);
    for(i=0;i<n;++i){scanf("%d",&x);if(x&1){++c;if(x<v)v=x;}r+=x;}if(c&1)r-=v;
    return !r?!printf("NIESTETY\n"):!printf("%d\n",r);
}