delete pics to save space

1.1970.cpp

@@ -0,0 +1,19 @@
+#include<cstdio>
+int n,h[1000005],res=1,st;
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+    scanf("%d",&n);
+	for(int i=1;i<=n;i++) scanf("%d",&h[i]);
+    if(h[2]>=h[1]) st=1;
+    for(int i=1;i<=n;i++)
+    {
+        if(st==0&&i==n) { res++; break; }
+        if(st==1) if(h[i+1]<h[i]) { res++; st=0; continue; }
+        if(st==0) if(h[i+1]>h[i]) { res++; st=1; continue; }
+    }
+    printf("%d\n",res);
+    return 0;
+}