

function main(input){
	input = input.split("\n")
    var arr = input[1].split(" ").map(x=>Number(x))
  	//drink is 2d array containing (index+1, time)
    var drink = input.slice(3,-1).map(s => s.split(" ").map(x => Number(x)))
    var sum = 0
    for (let i = 0; i<arr.length; i++){
    	sum += arr[i]
    }
    var ans = []
  	for (let i = 0; i<Number(input[2]);i++){
        let d = drink[i]
        let r = sum+d[1]-arr[d[0]-1]
      	ans.push(r)
    }
    console.log(ans.join("\n"))
}
var input = require("fs").readFileSync("/dev/stdin","utf8")
main(input)
