This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
//#define int long long
using namespace std;
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;
int dp[505][2*maxn+5];
signed main() {
int n;
cin >> n;
ll sum = 0;
vector<int> v(n+1);
for(int i=1; i<=n; i++) cin >> v[i], sum += v[i];
for(int j=0; j<=2*maxn; j++) dp[0][j] = -1e9;
dp[0][maxn] = 0;
for(int i=1; i<=n; i++) {
for(int j=0; j<=2*maxn; j++) {
dp[i][j] = dp[i-1][j];
if(j + v[i] <= 2 * maxn && dp[i-1][j+v[i]] >= 0) dp[i][j] = max(dp[i][j], dp[i-1][j+v[i]] + v[i]);
if(j - v[i] >= 0 && dp[i-1][j-v[i]] >= 0) dp[i][j] = max(dp[i][j], dp[i-1][j-v[i]] + v[i]);
}
}
cout << sum - dp[n][maxn] / 2 << '\n';
return 0;
}
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