Submission #1073728

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Source Code Expand

#include<iostream>

#define REP(i,a,b) for(int i=(int)(a);i<(int)(b);++i)

using namespace std;

typedef long long int lli;

lli A[100010];
lli B[100010];

int main(){
  lli N;
  cin >> N;
  REP (i, 0, N) cin >> A[i] >> B[i];
  lli ans = 0;
  lli sum = 0;
  for (int i = N - 1; i >= 0; i--) {
    A[i] += sum;
    lli temp = (B[i] - (A[i] % B[i])) % B[i];
    ans += temp;
    sum += temp;
  }
  cout << ans << endl;
  return 0;
}

Submission Info

Judge Result