Create 705D.cpp

Codeforces/705D.cpp

@@ -0,0 +1,84 @@
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <algorithm>
+using namespace std;
+
+#define MAXN 5005
+
+#define INF 10000000000000LL
+using LL = long long;
+
+LL a[MAXN];
+LL b[MAXN];
+LL c[MAXN];
+LL d[MAXN];
+LL x[MAXN];
+LL dis[MAXN][MAXN];
+
+LL nextpos[MAXN];
+
+
+
+int main()
+{
+    int n,StartPoint,EndPoint;
+    scanf("%d %d %d",&n,&StartPoint,&EndPoint);
+    for(int i=1;i<=n;i++)
+    {
+        scanf("%lld",&x[i]);
+    }
+    for(int i=1;i<=n;i++)
+    {
+        scanf("%lld",&a[i]);
+    }
+    for(int i=1;i<=n;i++)
+    {
+        scanf("%lld",&b[i]);
+    }
+    for(int i=1;i<=n;i++)
+    {
+        scanf("%lld",&c[i]);
+    }
+    for(int i=1;i<=n;i++)
+    {
+        scanf("%lld",&d[i]);
+    }
+    for(int i=1;i<=n;i++)
+    {
+        for(int j=1;j<=n;j++)
+        {
+            if(i==j) {dis[i][j]=0;continue;}
+            if(j>i)
+            {
+                dis[i][j]=abs(x[i]-x[j])+d[i]+a[j];
+            }
+            else /// (j<i)
+            {
+                dis[i][j]=abs(x[i]-x[j])+c[i]+b[j];
+            }
+        }
+    }
+    nextpos[StartPoint]=EndPoint;
+    LL sum=dis[StartPoint][EndPoint];
+    int GoodTargetPoint=0;
+    for(int PointToView=1;PointToView<=n;PointToView++)
+    {
+        if(PointToView==StartPoint||PointToView==EndPoint) continue;
+        LL MinDis=INF;
+        for(int CurrentPoint=StartPoint;CurrentPoint!=EndPoint;CurrentPoint=nextpos[CurrentPoint])
+        {
+            LL tmp=dis[CurrentPoint][PointToView]+dis[PointToView][nextpos[CurrentPoint]]-dis[CurrentPoint][nextpos[CurrentPoint]];
+            if(tmp<MinDis)
+            {
+                MinDis=tmp;
+                GoodTargetPoint=CurrentPoint;
+            }
+        }
+        sum+=MinDis;
+        nextpos[PointToView]=nextpos[GoodTargetPoint];
+        nextpos[GoodTargetPoint]=PointToView;
+    }
+    printf("%lld\n",sum);
+    return 0;
+}