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#include <bits/stdc++.h>
using namespace std;
const int N = 40, M = 10010;
int n, m;
int f[N][M * N];
int v[N];
int main() {
cin >> m >> n;
for (int i = 1; i <= n; i++) cin >> v[i];
for (int i = 1; i <= n; i++)
for (int j = 1; j <= m; j++) {
f[i][j] = f[i - 1][j];
if (j >= v[i]) f[i][j] = max(f[i][j], f[i - 1][j - v[i]] + v[i]);
}
printf("%d\n", m - f[n][m]);
return 0;
}