delete pics to save space

7.3666.cpp

@@ -0,0 +1,30 @@
+#include<cstdio>
+#include<cstring>
+#include<algorithm>
+using namespace std;
+const int maxn=2005;
+int n,a[maxn],f[maxn][maxn],b[maxn],tot;
+int main()
+{
+	#ifdef local
+	freopen("pro.in","r",stdin);
+	#endif
+	scanf("%d",&n);
+	for(int i=1;i<=n;i++) { scanf("%d",&a[i]); b[i]=a[i]; }
+	sort(b+1,b+n+1);
+	tot=unique(b+1,b+n+1)-(b+1);
+	int val; memset(f,0x3f,sizeof(f)); f[1][0]=0;
+	for(int i=1;i<=n;i++)
+	{
+		val=f[i][0];
+		for(int j=1;j<=tot;j++)
+		{
+			val=min(val,f[i-1][j]);
+			f[i][j]=val+abs(a[i]-b[j]);
+		}
+	}
+	val=0x3f3f3f3f;
+	for(int j=1;j<=tot;j++) val=min(val,f[n][j]);
+	printf("%d\n",val);
+	return 0;
+}