127 lines
2.4 KiB
C++
127 lines
2.4 KiB
C++
/* Problem URL: https://cses.fi/problemset/task/1164 */
|
|
|
|
#include <bits/stdc++.h>
|
|
|
|
using namespace std;
|
|
|
|
#define V vector
|
|
|
|
#define rmin(a, b) a = min(a, b)
|
|
#define rmax(a, b) a = max(a, b)
|
|
|
|
#define rep(i, lim) for (size_t i = 0; i < (lim); i++)
|
|
#define nrep(i, s, lim) for (size_t i = s; i < (lim); i++)
|
|
|
|
#define repv(i, v) for (auto &i : (v))
|
|
#define fillv(v) for (auto &itr_ : (v)) { cin >> itr_; }
|
|
#define sortv(v) sort(v.begin(), v.end())
|
|
#define all(v) (v).begin(), (v).end()
|
|
|
|
using vi = vector<int>;
|
|
using vvi = vector<vi>;
|
|
using vvvi = vector<vvi>; using vvvvi = vector<vvvi>;
|
|
|
|
using ll = long long;
|
|
|
|
using vl = vector<ll>;
|
|
using vvl = vector<vl>;
|
|
using vvvl = vector<vvl>;
|
|
using vvvvl = vector<vvvl>;
|
|
|
|
template<class v>
|
|
auto operator<<(ostream &os, const vector<v> &vec)->ostream& {
|
|
os << vec[0];
|
|
for (size_t i = 1; i < vec.size(); i++) {
|
|
os << ' ' << vec[i];
|
|
}
|
|
os << '\n';
|
|
return os;
|
|
}
|
|
|
|
template<class v>
|
|
auto operator>>(istream &is, vector<v> &vec)->istream& {
|
|
for (auto &i : vec) {
|
|
is >> i;
|
|
}
|
|
return is;
|
|
}
|
|
|
|
template<class v>
|
|
auto operator<<(ostream &os, const vector<vector<v>> &vec)->ostream& {
|
|
for (auto &i : vec) {
|
|
os << i[0];
|
|
for (size_t j = 1; j < i.size(); j++) {
|
|
os << ' ' << i[j];
|
|
}
|
|
os << '\n';
|
|
}
|
|
return os;
|
|
}
|
|
|
|
template<class v>
|
|
auto operator>>(istream &is, vector<vector<v>> &vec)->istream& {
|
|
for (auto &i : vec) {
|
|
for (auto &j : i) {
|
|
is >> j;
|
|
}
|
|
}
|
|
return is;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
ios::sync_with_stdio(false);
|
|
cin.tie(nullptr);
|
|
|
|
int n;
|
|
cin >> n;
|
|
|
|
V<tuple<int, ll, ll>> cus(n);
|
|
map<ll, int> var;
|
|
size_t ind = 0;
|
|
for (auto &[i, a, b] : cus) {
|
|
cin >> a >> b;
|
|
var[a] = 0;
|
|
var[b] = 0;
|
|
i = ind;
|
|
ind++;
|
|
}
|
|
|
|
int v = 0;
|
|
for (auto &i : var) {
|
|
i.second = v;
|
|
v++;
|
|
}
|
|
|
|
V<tuple<ll, int, int>> act;
|
|
|
|
for (auto &[i, a, b] : cus) {
|
|
a = var[a];
|
|
b = var[b];
|
|
act.emplace_back(a, 0, i);
|
|
act.emplace_back(b, 1, i);
|
|
}
|
|
|
|
int k = 1;
|
|
priority_queue<int, vi, greater<>> pos;
|
|
for (size_t i = 1; i <= n; i++) {
|
|
pos.push(i);
|
|
}
|
|
vi ans(n);
|
|
|
|
sortv(act);
|
|
|
|
for (auto [a, yes, i] : act) {
|
|
if (!yes) {
|
|
ans[i] = pos.top();
|
|
pos.pop();
|
|
rmax(k, ans[i]);
|
|
} else {
|
|
pos.push(ans[i]);
|
|
}
|
|
}
|
|
|
|
cout << k << '\n';
|
|
cout << ans;
|
|
}
|