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#include<cstdio>
char bm[(1<<23)];
main(){
bm[fread(bm,1,sizeof(bm),stdin)]=0;
char*w=bm;
while(*w>='0')w++;w++;
int s=0,nnp=8192;
register int t=0;
while(*w){
if(*w<'0'){
 s+=t;
 if(t&1)if(t<nnp)nnp=t;
 t=0;}
 else{t*=10;t+=*w-'0';}
w++;  
}
if(s&1)s-=nnp;
printf(s?"%d\n":"NIESTETY\n",s);
}