1742. Coins

23406540

POJ/1742/1742.cpp

@@ -0,0 +1,36 @@
+#include <cstdio>
+
+const int N = 105,
+          M = 1e6 + 5;
+
+int n, m, v[N], s[N], g[M];
+bool f[M];
+
+int main() {
+    while (scanf("%d%d", &n, &m), n || m) {
+        for (int i = 1; i <= n; i++) {
+            scanf("%d", v + i);
+        }
+        for (int i = 1; i <= n; i++) {
+            scanf("%d", s + i);
+        }
+
+        for (int i = 1; i <= m; i++) f[i] = 0;
+        f[0] = 1;
+        for (int i = 1; i <= n; i++) {
+            for (int j = 0; j <= m; j++) g[j] = 0;
+            for (int j = v[i]; j <= m; j++) {
+                if (!f[j] && f[j - v[i]] && g[j - v[i]] < s[i]) {
+                    f[j] = true;
+                    g[j] = g[j - v[i]] + 1;
+                }
+            }
+        }
+
+        int ans = 0;
+        for (int i = 1; i <= m; i++) ans += f[i];
+        printf("%d\n", ans);
+    }
+
+    return 0;
+}