#include <bits/stdc++.h>
#define lsb(x) (x & (-x))
#define ll long long
#define ull unsigned long long
#if 0
const int MOD = ;
inline int lgput(int a, int b) {
int ans = 1;
while(b > 0) {
if(b & 1) ans = (1LL * ans * a) % MOD;
b >>= 1;
a = (1LL * a * a) % MOD;
}
return ans;
}
inline void mod(int &x) {
if(x >= MOD)
x -= MOD;
}
inline void add(int &x, int y) {
x += y;
mod(x);
}
inline void sub(int &x, int y) {
x += MOD - y;
mod(x);
}
inline void mul(int &x, int y) {
x = (1LL * x * y) % MOD;
}
inline int inv(int x) {
return lgput(x, MOD - 2);
}
#endif
#if 0
int fact[], invfact[];
inline void prec(int n) {
fact[0] = 1;
for(int i = 1; i <= n; i++) {
fact[i] = (1LL * fact[i - 1] * i) % MOD;
}
invfact[n] = lgput(fact[n], MOD - 2);
for(int i = n - 1; i >= 0; i--) {
invfact[i] = (1LL * invfact[i + 1] * (i + 1)) % MOD;
}
}
inline int comb(int n, int k) {
if(n < k) return 0;
return (1LL * fact[n] * (1LL * invfact[k] * invfact[n - k] % MOD)) % MOD;
}
#endif
using namespace std;
struct Fenwick {
vector < pair <int, int> > aib;
int n;
inline void init(int _n) {
n = _n;
aib.resize(n + 1, {0, -1});
}
inline void update(int pos, int cnt, int p) {
for(int i = pos + 1; i <= n; i += lsb(i)) {
if(cnt > aib[i].first) {
aib[i] = {cnt, p};
}
}
}
inline pair <int, int> query(int pos) {
pair <int, int> ans = {0, 1e9};
for(int i = pos + 1; i > 0; i -= lsb(i)) {
if(ans.first < aib[i].first || (ans.first == aib[i].first && ans.second > aib[i].second)) {
ans = aib[i];
}
}
return ans;
}
};
int main() {
#if 0
ifstream cin("A.in");
ofstream cout("A.out");
#endif
int i, n, m;
ios::sync_with_stdio(false);
cin.tie(0), cout.tie(0);
cin >> n >> m;
vector < pair <int, int> > a(n);
for(i = 0; i < n; i++) {
cin >> a[i].second >> a[i].first;
}
sort(a.begin(), a.end());
/*for(auto it : a) {
cerr << it.first << " " << it.second << " ";
}
cerr << "\n";*/
vector < pair <int, int> > b(n);
for(i = 0; i < n; i++) {
b[i] = {a[i].second, i};
}
sort(b.begin(), b.end());
/*for(auto it : b) {
cerr << it.first << " " << it.second << " ";
}
cerr << "\n";*/
vector <int> c(m);
for(i = 0; i < m; i++) {
cin >> c[i];
}
sort(c.begin(), c.end());
Fenwick fen; fen.init(n);
for(auto it : b) {
auto cur = fen.query(it.second - 1);
int res = cur.second;
for(int step = 1 << 17; step; step >>= 1) {
if(res + step < m && c[res + step] < it.first) {
res += step;
}
}
res++;
//cerr << cur.first << " " << cur.second << " " << res << "\n";
if(res < m) {
fen.update(it.second, cur.first + 1, res);
}
}
cout << fen.query(n - 1).first;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Incorrect |
2 ms |
376 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
