delete pics to save space

p.CH5E07.cpp

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+//https://www.acwing.com/problem/content/320/
+#include<cstdio>
+#include<cstring>
+#include<algorithm>
+using namespace std;
+const int maxn=20005;
+int a[7],f[maxn*6],tot,Q[maxn*6],L,R;
+void DP(int v,int t)
+{
+	for(int s=0;s<v;s++)
+	{
+		Q[L=R=1]=s;
+		for(int j=s+v;j<=tot;j+=v)
+		{
+			while(L<=R&&(j-Q[L])/v>t) L++;
+			if(L<=R) f[j]=f[Q[L]];
+			while(L<=R&&f[j]>=f[Q[R]]) R--;
+			Q[++R]=j;
+		}
+	}
+}
+int main()
+{
+	#ifdef local
+	freopen("pro.in","r",stdin);
+	#endif
+	while(true)
+	{
+		tot=0;
+		for(int i=1;i<=6;i++) { scanf("%d",&a[i]); tot+=a[i]*i; }
+		if(tot==0) return 0;
+		if(tot&1) { puts("Can't"); continue; }
+		memset(f,0,sizeof(f));
+		f[0]=1; tot/=2;
+		for(int i=1;i<=6;i++) DP(i,a[i]);
+		puts(f[tot]?"Can":"Can't");
+	}
+	return 0;
+}