2 files changed, 55 insertions, 3 deletions
diff --git a/works/solutions/acwing/5.cpp b/works/solutions/acwing/5.cpp
index e451a2d..a88fba6 100644
--- a/works/solutions/acwing/5.cpp
+++ b/works/solutions/acwing/5.cpp
@@ -39,9 +39,7 @@ int main() {
         k *= 2;
       }
 
-      if (amount != 0) {
-        ZeroOnePack(amount * v[i], amount * w[i]);
-      }
+      ZeroOnePack(amount * v[i], amount * w[i]);
     }
   }
 
diff --git a/works/solutions/acwing/7.cpp b/works/solutions/acwing/7.cpp
new file mode 100644
index 0000000..fcc0fb1
--- /dev/null
+++ b/works/solutions/acwing/7.cpp
@@ -0,0 +1,54 @@
+#include <algorithm>
+#include <iostream>
+
+int N, V;
+int v[1001];
+int w[1001];
+int s[1001];
+int states[1001];
+
+void CompletePack(int v, int w) {
+  for (int j = v; j <= V; j++) {
+    states[j] = std::max(states[j], states[j - v] + w);
+  }
+}
+
+void ZeroOnePack(int v, int w) {
+  for (int j = V; j >= v; j--) {
+    states[j] = std::max(states[j], states[j - v] + w);
+  }
+}
+
+void MultiplePack(int v, int w, int s) {
+  int k = 1;
+
+  while (k < s) {
+    ZeroOnePack(k * v, k * w);
+    s -= k;
+    k *= 2;
+  }
+
+  ZeroOnePack(s * v, s * w);
+}
+
+int main() {
+  std::cin >> N >> V;
+
+  for (int i = 1; i <= N; i++) {
+    std::cin >> v[i] >> w[i] >> s[i];
+  }
+
+  for (int i = 1; i <= N; i++) {
+    if (s[i] < 0) {
+      ZeroOnePack(v[i], w[i]);
+    } else if (s[i] == 0) {
+      CompletePack(v[i], w[i]);
+    } else {
+      MultiplePack(v[i], w[i], s[i]);
+    }
+  }
+
+  std::cout << states[V];
+
+  return 0;
+}