noip2017day1t1
#include<iostream> #include<cstdio> #include<cstring> using namespace std; #define maxx 256*256 int n,ans=0; int f[maxx+10],a[1009]; int main() { scanf("%d",&n);f[0]=1; for (int i=1;i<=n;i++) scanf("%d",&a[i]); for (int i=1;i<=maxx;i++) for (int j=1;j<=n;j++) if (i>=a[j]) f[i]|=f[i-a[j]]; for (int i=maxx;i>=1;i--) if (!f[i]) {ans=i;break;} if (ans>maxx-2*256) ans=0; printf("%d\n",ans); return 0; }