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history_source/挑战程序设计竞赛/2.3.2.3.cpp

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+#include<cstdio>
+#include<cstring>
+int n,k,a[105],m[105];
+int dp[100005];
+void init()
+{
+	scanf("%d",&n);
+	for(int i=0;i<n;i++) scanf("%d",a+i);
+	for(int i=0;i<n;i++) scanf("%d",m+i);
+	scanf("%d",&k);
+}
+void solve()
+{
+	memset(dp,-1,sizeof(dp));
+	dp[0]=0;
+	for(int i=0;i<n;i++)
+		for(int j=0;j<=k;j++)
+			if(dp[j]>=0) dp[j]=m[i];
+			else if(j<a[i]||dp[j-a[i]]<=0) dp[j]=-1;
+			else dp[j]=dp[j-a[i]]-1;
+	if(dp[k]>=0) printf("Yes\n");
+	else printf("No\n");
+}
+int main()
+{
+	init();
+	solve();
+	return 0;
+}