#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;
#define fileio \
freopen("input.txt", "r", stdin); \
freopen("output.txt", "w", stdout);
#define fastio ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define ll long long
#define ld long double
#define vl vector<long long>
#define vi vector<int>
#define vb vector<bool>
#define vvl vector<vector<long long>>
#define vvi vector<vector<int>>
#define vvb vector<vector<bool>>
#define vsi vector<set<int>>
#define ull unordered_map<ll, ll>
#define pll pair<long long, long long>
#define pii pair<int,int>
//#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define fo(i,a,n) for(ll i=a; i<=n; i++)
#define fr(i,n,a) for(ll i=n; i>=a; i--)
#define all(v) v.begin(),v.end()
#define max3(a,b,c) max(a, max(b,c))
#define min3(a,b,c) min(a, min(b,c))
#define endl "\n"
/*
#define M 998244353
ll multiply (ll a, ll b) {
return ((a*b)%M +M)%M;
}
ll power (ll base, ll exp) {
if (exp==0) return 1;
ll ans = (exp%2==1) ? base:1;
ll sa = power(base, exp/2);
ans = multiply(ans, sa);
ans = multiply(ans, sa);
return ans;
}
ll divide (ll a, ll b) {
ll x = power(b, M-2);
return multiply(a,x);
}
*/
struct Elements {
ll a;
ll b;
ll idx;
ll maxi;
ll mini;
};
struct Query {
ll val;
ll idx;
};
class SegmentTree {
vl maxiCalculator;
vl countCalculator;
vl a;
int n;
void buildTree(vl& sTree, int idx, int start, int end) {
if (start == end) {
sTree[idx] = start;
return;
}
int mid = (start+end)/2;
buildTree(sTree, 2*idx+1, start, mid);
buildTree(sTree, 2*idx+2, mid+1, end);
sTree[idx] = (a[sTree[2*idx+2]] >= a[sTree[2*idx+1]]) ? sTree[2*idx+2] : sTree[2*idx+1];
}
ll queryMaxTreeIdx(vl& sTree, int idx, int start, int end, int maxi) {
if (a[sTree[idx]] < maxi) return -1;
if (start == end) return start;
int mid = (start+end)/2;
int rightVal = a[sTree[2*idx+2]];
if (rightVal >= maxi) return queryMaxTreeIdx(sTree, 2*idx+2, mid+1, end, maxi);
else return queryMaxTreeIdx(sTree, 2*idx+1, start, mid, maxi);
}
ll queryCountTreeIdx(const vl& sTree, int idx, int start, int end, int qs, int qe) {
if (qs > end || qe < start) return 0;
if (start>=qs && end<=qe) return sTree[idx];
int mid = (start+end)/2;
ll leftAns = queryCountTreeIdx(sTree, 2*idx+1, start, mid, qs, qe);
ll rightAns = queryCountTreeIdx(sTree, 2*idx+2, mid+1, end, qs, qe);
return leftAns+rightAns;
}
void updateMaxTreeIdx(vl& sTree, int idx, int start, int end, int updateIdx) {
if (start == end) {
a[updateIdx] = -1;
return;
}
int mid = (start+end)/2;
if (updateIdx <= mid) updateCountTreeIdx(sTree, 2*idx+1, start, mid, updateIdx);
else updateCountTreeIdx(sTree, 2*idx+2, mid+1, end, updateIdx);
sTree[idx] = (a[sTree[2*idx+2]] >= a[sTree[2*idx+1]]) ? sTree[2*idx+2] : sTree[2*idx+1];
}
void updateCountTreeIdx(vl& sTree, int idx, int start, int end, int updateIdx) {
if (start == end) {
a[updateIdx] = 1;
sTree[idx]++;
return;
}
int mid = (start+end)/2;
if (updateIdx <= mid) updateCountTreeIdx(sTree, 2*idx+1, start, mid, updateIdx);
else updateCountTreeIdx(sTree, 2*idx+2, mid+1, end, updateIdx);
sTree[idx]++;
}
void displayTree(const vl& sTree, int idx, int start, int end) {
cout<<"Range "<<start<<" -> "<<end<<" contains "<<sTree[idx]<<endl;
if (start == end) return;
int mid = (start+end)/2;
displayTree(sTree, 2*idx+1, start, mid);
displayTree(sTree, 2*idx+2, mid+1, end);
}
void displayTree(const vl& sTree) {
displayTree(sTree, 0, 0, n-1);
}
public:
SegmentTree(const vector<Query>& array) {
n = array.size();
a.resize(n);
maxiCalculator.resize(4*n);
countCalculator.resize(4*n);
fo (i,0,n-1) a[i] = array[i].val;
buildTree(maxiCalculator, 0, 0, n-1);
fo (i,0,2*n-1) countCalculator[i] = 0;
//displayTree(maxiCalculator);
}
ll findRightmostIndex(ll maxi) {
return queryMaxTreeIdx(maxiCalculator, 0, 0, n-1, maxi);
}
void update(Query query) {
//cout<<"Updating : "<<query.idx<<" having "<<query.val<<endl;
updateMaxTreeIdx(maxiCalculator, 0, 0, n-1, query.idx);
updateCountTreeIdx(countCalculator, 0, 0, n-1, query.idx);
//cout<<"Displaying MaxTree"<<endl; displayTree(maxiCalculator);
//cout<<"Displaying CountTree"<<endl; displayTree(countCalculator);
}
ll countRotations(ll leftIdx) {
return queryCountTreeIdx(countCalculator, 0, 0, n-1, leftIdx, n-1);
}
};
void solve() {
int n, q; cin>>n>>q;
vector<Elements> array(n);
fo (i,0,n-1) {
ll x, y; cin>>x>>y;
array[i] = {x,y,i,max(x,y),min(x,y)};
}
sort(all(array), [](auto x, auto y) {return x.maxi > y.maxi;});
vector<Query> query(q);
fo (i,0,q-1) {
cin>>query[i].val;
query[i].idx = i;
}
SegmentTree fastQueries(query);
sort(all(query), [](auto x, auto y) {return x.val > y.val;});
ll eliminatedIdx = 0;
ll ans = 0;
fo (i,0,n-1) {
//cout<<"Solving for : "<<array[i].idx<<" having "<<array[i].a<<" and "<<array[i].b<<endl;
while (eliminatedIdx < q && query[eliminatedIdx].val >= array[i].maxi) {
fastQueries.update(query[eliminatedIdx]);
eliminatedIdx++;
}
int rightMost = fastQueries.findRightmostIndex(array[i].mini);
int countRotations = fastQueries.countRotations(rightMost+1);
//cout<<"Found rightmost index : "<<rightMost<<" and rotations are "<<countRotations<<endl;
ll shortAns = ((countRotations%2) ? array[i].mini : array[i].maxi);
if (rightMost == -1) shortAns = ((countRotations%2) ? array[i].b : array[i].a);
ans += shortAns;
}
cout<<ans<<endl;
}
int main() {
fastio;
int t=1; //cin>>t;
while(t--) {
solve();
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
