delete pics to save space

history_source/信息学奥赛一本通/1.6.1.5.cpp

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+#include<cstdio>
+#include<cstring>
+using namespace std;
+bool isc_(int *front,int *last,int n)
+{
+	int *i;
+	i=front; 
+	for(;i<last;i++)
+		if(*i==n) return 1;
+	return 0;
+}
+int main()
+{
+	int m,n,diary[1200],front=0,last=0,ans=0,x;
+	memset(diary,-1,1200);
+	scanf("%d%d",&m,&n);
+	for(int i=0;i<n;i++)
+	{
+		scanf("%d",&x);
+		if(!isc_(diary+front,diary+last,x))
+		{
+			diary[last++]=x;
+			if(last-front>m) front++;
+			ans++;
+		}
+	}
+	printf("%d\n",ans);
+	return 0;
+}