Create 1061_MyCodeBattle.cpp

From https://vijos.org/p/1159/solution

QUSTOJ/1061_MyCodeBattle.cpp

@@ -0,0 +1,57 @@
+#include <bits/stdc++.h>
+#define LL long long
+using namespace std;
+const int VMAXN = 2e4 + 10;
+const int TMAXN = 100 + 10;
+const int INF = 0x3f3f3f3f;
+ 
+int num[TMAXN], dp[VMAXN], k, n, m;
+int ans[TMAXN];
+ 
+bool Check(int sum)
+{
+    int &cur = dp[sum];
+    if (cur != -1)
+        return cur;
+    if (sum == 0)
+        return cur = 1;
+    for (int i = 0; i < k; i++)
+        if (sum >= ans[i] && Check(sum - ans[i]))
+            return cur = 1;
+    return cur = 0;
+}
+ 
+void DFSID(int cur, int dep)
+{
+    if (dep == k)
+    {
+        memset(dp, -1, sizeof dp);
+        if (Check(n))
+        {
+            printf("%d", k);
+            for (int i = 0; i < dep; i++)
+                printf(" %d", ans[i]);
+            puts("");
+            exit(0);
+        }
+        return;
+    }
+    if (cur >= m)
+        return;
+    ans[dep] = num[cur];
+    DFSID(cur + 1, dep + 1);
+    DFSID(cur + 1, dep);
+}
+ 
+int main()
+{
+    //freopen("input.txt", "r", stdin);
+    int i, j;
+    scanf("%d%d", &n, &m);
+    for (i = 0; i < m; i++)
+        scanf("%d", &num[i]);
+    sort(num, num + m);
+    for (k = 1; k <= m; k++)
+        DFSID(0, 0);
+    return 0;
+}