delete pics to save space

2023-08-03 09:22:52 +08:00
commit de60cd6ed4
1334 changed files with 66221 additions and 0 deletions
--- a/2.1347.cpp
+++ b/2.1347.cpp
@ -0,0 +1,30 @@
+#include<cstdio>
+#include<cstring>
+#include<cmath>
+#include<algorithm>
+using namespace std;
+const int maxn=1005;
+double dp[maxn][maxn],dis[maxn][maxn];
+int x[maxn],y[maxn];
+int n;
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	while(scanf("%d",&n)==1)
+	{
+		for(int i=1;i<=n;i++) scanf("%d%d",x+i,y+i);
+		for(int i=1;i<=n;i++)
+			for(int j=1;j<=n;j++)
+				dis[i][j]=sqrt((x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j]));
+		for(int i=n-1;i>=2;i--)
+			for(int j=1;j<i;j++)
+			{
+				if(i==n-1) dp[i][j]=dis[i][n]+dis[j][n];
+				else dp[i][j]=min(dp[i+1][j]+dis[i][i+1],dp[i+1][i]+dis[j][i+1]);
+			}
+		printf("%.2lf\n",dis[1][2]+dp[2][1]);
+	}
+	return 0;
+}