delete pics to save space

p.CH2201.cpp

@@ -0,0 +1,36 @@
+//http://contest-hunter.org:83/contest/0x20%E3%80%8C%E6%90%9C%E7%B4%A2%E3%80%8D%E4%BE%8B%E9%A2%98/2201%20%E5%B0%8F%E7%8C%AB%E7%88%AC%E5%B1%B1
+#include<cstdio>
+#include<algorithm>
+using namespace std;
+int n,w,l[20],c[20],res,cnt=0;
+void dfs(int d)
+{
+	if(cnt>=res) return;
+	if(d==n)
+	{
+		res=cnt;
+		return;
+	}
+	for(int i=0;i<cnt;i++) if(l[i]+c[d]<=w)
+	{
+		l[i]+=c[d];
+		dfs(d+1);
+		l[i]-=c[d];
+	}
+	l[cnt++]=c[d];
+	dfs(d+1);
+	l[--cnt]=0;
+}
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	scanf("%d%d",&n,&w);
+	for(int i=0;i<n;i++) scanf("%d",&c[i]);
+	res=n;
+	sort(c,c+n); reverse(c,c+n);
+	dfs(0);
+	printf("%d\n",res);
+	return 0;
+}