delete pics to save space

2.1210.cpp

@@ -0,0 +1,30 @@
+#include<cstdio>
+inline bool isp(int a)
+{
+	for(int i=2;i*i<=a;i++)
+		if(a%i==0) return false;
+	return true;
+}
+int p[10000],cnt,n,res,head,tail,sum;
+int main()
+{
+	for(int i=2;i<=10000;i++)
+		if(isp(i)) p[cnt++]=i;
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	while(scanf("%d",&n)==1&&n)
+	{
+		res=(p[0]==n);
+		head=0;tail=1;
+		sum=p[0];
+		while(tail<cnt&&head<cnt)
+		{
+			sum+=p[tail++];
+			while(sum>n) sum-=p[head++];
+			if(sum==n) res++;
+		}
+		printf("%d\n",res);
+	}
+	return 0;
+}