#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define endl '\n'
#define pb push_back
#define conts continue
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl
#define ff first
#define ss second
#define ceil2(x,y) ((x+y-1) / (y))
#define sz(a) a.size()
#define setbits(x) __builtin_popcountll(x)
#ifndef ONLINE_JUDGE
#define debug(x) cout << #x <<" = "; print(x); cout << endl
#else
#define debug(x)
#endif
#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define trav(i,a) for(auto &i : a)
bool iseven(ll n) {if ((n & 1) == 0) return true; return false;}
void print(ll t) {cout << t;}
void print(int t) {cout << t;}
void print(string t) {cout << t;}
void print(char t) {cout << t;}
void print(double t) {cout << t;}
void print(ld t) {cout << t;}
template <class T, class V> void print(pair <T, V> p);
template <class T> void print(vector <T> v);
template <class T> void print(set <T> v);
template <class T, class V> void print(map <T, V> v);
template <class T> void print(multiset <T> v);
template <class T, class V> void print(pair <T, V> p) {cout << "{"; print(p.ff); cout << ","; print(p.ss); cout << "}";}
template <class T> void print(vector <T> v) {cout << "[ "; for (T i : v) {print(i); cout << " ";} cout << "]";}
template <class T> void print(set <T> v) {cout << "[ "; for (T i : v) {print(i); cout << " ";} cout << "]";}
template <class T> void print(multiset <T> v) {cout << "[ "; for (T i : v) {print(i); cout << " ";} cout << "]";}
template <class T, class V> void print(map <T, V> v) {cout << "[ "; for (auto i : v) {print(i); cout << " ";} cout << "]";}
template<typename T> void amin(T &a, T b) { a = min(a, b); }
template<typename T> void amax(T &a, T b) { a = max(a, b); }
void usaco(string filename) {
freopen((filename + ".in").c_str(), "r", stdin);
freopen((filename + ".out").c_str(), "w", stdout);
}
const int MOD = 1e9 + 7;
const int maxn = 1e5 + 5;
const int inf1 = 1e9 + 5;
const ll inf2 = ll(1e18) + 5;
template<typename T>
struct sparse_table{
/*============================*/
T merge(T a, T b){
return max(a, b);
}
/*============================*/
vector<vector<T>> table;
vector<int> bin_log;
int LOG = 0;
sparse_table(){
}
sparse_table(vector<T> &a, int n){
while((1 << LOG) <= n) LOG++;
table = vector<vector<T>>(n, vector<T>(LOG));
bin_log = vector<int>(n+1);
rep(i,n) table[i][0] = a[i];
rep1(j,LOG-1){
rep(i,n){
int jump = 1 << (j - 1);
if(i + jump >= n){
break;
}
table[i][j] = merge(table[i][j-1], table[i + jump][j-1]);
}
}
bin_log[1] = 0;
for(int i = 2; i <= n; ++i){
bin_log[i] = bin_log[i/2] + 1;
}
}
T query(int l, int r){
int len = r - l + 1;
int k = bin_log[len];
T val1 = table[l][k];
T val2 = table[r - (1 << k) + 1][k];
return merge(val1, val2);
}
};
template<typename T>
struct fenwick{
int siz;
vector<T> tree;
fenwick(int n){
siz = n;
tree = vector<T>(n + 1);
}
int lsb(int x){
return __builtin_ffs(x) - 1;
}
void build(vector<T> &a, int n){
for(int i = 1; i <= n; ++i){
int toadd = 1 << lsb(i);
int par = i + toadd;
tree[i] += a[i];
if(par <= siz){
tree[par] += tree[i];
}
}
}
void pupd(int i, T v){
while(i <= siz){
tree[i] += v;
int toadd = 1 << lsb(i);
i += toadd;
}
}
T sum(int i){
T res = 0;
while(i){
res += tree[i];
int tosub = 1 << lsb(i);
i -= tosub;
}
return res;
}
T query(int l, int r){
T res = sum(r) - sum(l-1);
return res;
}
};
void solve(int test_case)
{
// https://blog.naver.com/jh05013/221306447912
ll n, k; cin >> n >> k;
vector<pair<ll, ll>> a(n), b(k);
rep(i, n) cin >> a[i].ff >> a[i].ss;
rep(i, k) {
ll x; cin >> x;
b[i] = {x, i};
}
auto comp = [&](pair<ll, ll> &p1, pair<ll, ll> &p2) {
return max(p1.ff, p1.ss) > max(p2.ff, p2.ss);
};
sort(all(a), comp);
sort(all(b));
vector<ll> c(k), d(k);
rep(i, k) c[i] = b[i].ff, d[i] = b[i].ss;
sparse_table<ll> st(d, k);
fenwick<ll> fenw(k + 5);
ll ptr = k - 1;
ll ans = 0;
rep(i, n) {
ll flip = 0;
if (a[i].ff < a[i].ss) {
swap(a[i].ff, a[i].ss);
flip = 1;
}
while (ptr >= 0 and b[ptr].ff >= a[i].ff) {
// fenwick only works for 1-indexed values
fenw.pupd(b[ptr].ss + 1, 1);
ptr--;
}
ll l = lower_bound(all(c), a[i].ss) - c.begin();
ll r = lower_bound(all(c), a[i].ff) - c.begin() - 1;
ll mx = 0;
if(l < k and l <= r){
// flip = 0;
mx = st.query(l, r);
}
flip += fenw.query(mx + 1, k);
flip %= 2;
if(!flip){
ans += a[i].ff;
}
else{
ans += a[i].ss;
}
}
cout << ans << endl;
}
int main()
{
fastio;
int t = 1;
// cin >> t;
rep1(i, t) {
solve(i);
}
return 0;
}
Compilation message
fortune_telling2.cpp: In function 'void usaco(std::string)':
fortune_telling2.cpp:58:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
58 | freopen((filename + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fortune_telling2.cpp:59:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
59 | freopen((filename + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
472 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
472 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
472 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
