#include <bits/stdc++.h>
using namespace std;
int n;
struct rg {
  int l, r, id;
} a[105];
bool cmp(rg x, rg y) { return x.r < y.r; }
int ans[105];
int t[105], cnt;
void add(int x) {
  for (int i = 1; i <= cnt; ++i) {
    if (t[i] > x) {
      for (int j = cnt; j >= i; --j) {
        t[j + 1] = t[j];
      }
      t[i] = x;
      ++cnt;
      return;
    }
  }
  t[++cnt] = x;
}
int main() {
  scanf("%d", &n);
  for (int i = 1; i <= n; ++i) {
    scanf("%d%d", &a[i].l, &a[i].r);
    a[i].id = i;
  }
  sort(a + 1, a + n + 1, cmp);
  for (int i = 1; i <= n; ++i) {
    int j = lower_bound(t + 1, t + cnt + 1, a[i].l) - t;
    if (t[j] == a[i].l) {
      int x = 1;
      while (t[j + x] == a[i].l + x) ++x;
      ans[a[i].id] = a[i].l + x;
      add(a[i].l + x);
    } else {
      ans[a[i].id] = a[i].l;
      add(a[i].l);
    }
  }
  for (int i = 1; i <= n; ++i) printf("%d ", ans[i]);
  printf("\n");
  return 0;
}
