#include <bits/stdc++.h>
using namespace std;
struct block {
  int l, r, k, d;
  bool operator<(const block &nw) const {
    return (d < nw.d || (d == nw.d && l < nw.l) ||
            (d == nw.d && l == nw.l && r < nw.r));
  }
  static block make(int l, int r, int k, int d) {
    block nw;
    nw.l = l;
    nw.r = r;
    nw.k = k;
    nw.d = d;
    return nw;
  }
};
const int MN = 100 + 10;
block arr[MN];
int ans[MN];
bool used[1000 * 1000 * 10 + 10];
bool done[MN];
int main() {
  int n;
  cin >> n;
  for (int i = 0; i < n; i++) {
    int x, y;
    cin >> x >> y;
    arr[i] = block::make(x, y, i, y - x);
  }
  sort(arr, arr + n);
  int kol = 0;
  while (kol < n) {
    sort(arr, arr + n);
    for (int i = 0; i < n; i++) {
      if (done[arr[i].k]) continue;
      int curr = arr[i].l;
      while (used[curr]) curr++;
      ans[arr[i].k] = curr;
      used[curr] = true;
      done[arr[i].k] = true;
      kol++;
      for (int j = 0; j < n; j++)
        if (arr[j].l <= curr && arr[j].r >= curr) arr[j].d--;
      break;
    }
  }
  for (int i = 0; i < n; i++) cout << ans[i] << " ";
  return 0;
}
