Buffet

AtCoder

IDabc140_b

Time2000ms

Memory256MB

Difficulty—

Takahashi went to an all-you-can-eat buffet with $N$ kinds of dishes and ate all of them (Dish $1$, Dish $2$, $\ldots$, Dish $N$) once. The $i$\-th dish $(1 \leq i \leq N)$ he ate was Dish $A_i$. When he eats Dish $i$ $(1 \leq i \leq N)$, he gains $B_i$ satisfaction points. Additionally, when he eats Dish $i+1$ just after eating Dish $i$ $(1 \leq i \leq N - 1)$, he gains $C_i$ more satisfaction points. Find the sum of the satisfaction points he gained. ## Constraints * All values in input are integers. * $2 \leq N \leq 20$ * $1 \leq A_i \leq N$ * $A_1, A_2, ..., A_N$ are all different. * $1 \leq B_i \leq 50$ * $1 \leq C_i \leq 50$ ## Input Input is given from Standard Input in the following format: $N$ $A_1$ $A_2$ $...$ $A_N$ $B_1$ $B_2$ $...$ $B_N$ $C_1$ $C_2$ $...$ $C_{N-1}$ [samples]

Samples

Input #1

Output #1

14

Takahashi gained $14$ satisfaction points in total, as follows:

*   First, he ate Dish $3$ and gained $4$ satisfaction points.
*   Next, he ate Dish $1$ and gained $2$ satisfaction points.
*   Lastly, he ate Dish $2$ and gained $5 + 3 = 8$ satisfaction points.

Input #2

Output #2

Input #3

Output #3

API Response (JSON)

{
  "problem": {
    "name": "Buffet",
    "description": {
      "content": "Takahashi went to an all-you-can-eat buffet with $N$ kinds of dishes and ate all of them (Dish $1$, Dish $2$, $\\ldots$, Dish $N$) once. The $i$\\-th dish $(1 \\leq i \\leq N)$ he ate was Dish $A_i$. When",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc140_b"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "Takahashi went to an all-you-can-eat buffet with $N$ kinds of dishes and ate all of them (Dish $1$, Dish $2$, $\\ldots$, Dish $N$) once.\nThe $i$\\-th dish $(1 \\leq i \\leq N)$ he ate was Dish $A_i$.\nWhen...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

Full JSON Raw Segments