Integer Cards

AtCoder

IDabc127_d

Time2000ms

Memory256MB

Difficulty—

You have $N$ cards. On the $i$\-th card, an integer $A_i$ is written. For each $j = 1, 2, ..., M$ in this order, you will perform the following operation once: Operation: Choose at most $B_j$ cards (possibly zero). Replace the integer written on each chosen card with $C_j$. Find the maximum possible sum of the integers written on the $N$ cards after the $M$ operations. ## Constraints * All values in input are integers. * $1 \leq N \leq 10^5$ * $1 \leq M \leq 10^5$ * $1 \leq A_i, C_i \leq 10^9$ * $1 \leq B_i \leq N$ ## Input Input is given from Standard Input in the following format: $N$ $M$ $A_1$ $A_2$ $...$ $A_N$ $B_1$ $C_1$ $B_2$ $C_2$ $\vdots$ $B_M$ $C_M$ [samples]

Samples

Input #1

Output #1

14

By replacing the integer on the second card with $5$, the sum of the integers written on the three cards becomes $5 + 5 + 4 = 14$, which is the maximum result.

Input #2

10 3
1 8 5 7 100 4 52 33 13 5
3 10
4 30
1 4

Output #2

Input #3

3 2
100 100 100
3 99
3 99

Output #3

Input #4

11 3
1 1 1 1 1 1 1 1 1 1 1
3 1000000000
4 1000000000
3 1000000000

Output #4

10000000001

The output may not fit into a $32$\-bit integer type.

API Response (JSON)

{
  "problem": {
    "name": "Integer Cards",
    "description": {
      "content": "You have $N$ cards. On the $i$\\-th card, an integer $A_i$ is written. For each $j = 1, 2, ..., M$ in this order, you will perform the following operation once: Operation: Choose at most $B_j$ cards (p",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc127_d"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "You have $N$ cards. On the $i$\\-th card, an integer $A_i$ is written.\nFor each $j = 1, 2, ..., M$ in this order, you will perform the following operation once:\nOperation: Choose at most $B_j$ cards (p...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

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