Add problem 1226.

1 files changed, 55 insertions, 0 deletions

diff --git a/acwing/1226.cpp b/acwing/1226.cpp
new file mode 100644
index 0000000..cbfea98
--- /dev/null
+++ b/acwing/1226.cpp
@@ -0,0 +1,55 @@
+#include <iostream>
+
+int gcd(int a, int b) {
+  if (b == 0)
+    return a;
+  return gcd(b, a % b);
+}
+
+int N;
+int A[110];
+
+const int M = 10000;
+
+bool f[M + 10];
+
+int main() {
+  std::ios_base::sync_with_stdio(false);
+  std::cin.tie(nullptr);
+
+  std::cin >> N;
+
+  for (int i = 1; i <= N; i++) {
+    std::cin >> A[i];
+  }
+
+  int a = A[1];
+
+  for (int i = 2; i <= N; i++) {
+    a = gcd(a, A[i]);
+  }
+
+  if (a != 1) {
+    std::cout << "INF";
+    return 0;
+  }
+
+  f[0] = true;
+
+  for (int i = 1; i <= N; i++) {
+    for (int w = A[i]; w <= M; w++) {
+      f[w] = f[w] || f[w - A[i]];
+    }
+  }
+
+  int count = 0;
+
+  for (int i = 1; i <= M; i++) {
+    if (f[i] == false)
+      count++;
+  }
+
+  std::cout << count;
+
+  return 0;
+}