Envío 1574

Código

package main

import "fmt"

func result_sum(a_sum []int, p int , q int) {
  result := a_sum[q]
  if p > 0 {
    result -= a_sum[p-1]
  }
  fmt.Println(result)
}

func main() {
  var n int
  _, err := fmt.Scanf("%d", &n)

  if err != nil {
    panic(err)
  }
  
  a := make([]int, n)
  a_sum := make([]int, n)
  sum := 0
  for i := 0; i < n; i++ {
    _, err := fmt.Scanf("%d", &a[i])

    sum += a[i]
    a_sum[i] = sum

    if err != nil {
      panic(err)
    }
  }

  var c int
  _, err = fmt.Scanf("%d", &c)

  if err != nil {
    panic(err)
  }
  
  for i := 0; i < c; i++ {
    var p, q int
    _, err := fmt.Scanf("%d %d", &p, &q)
  
    if err != nil {
      panic(err)
    }
    result_sum(a_sum, p, q)
  }

}