結果
| 問題 |
No.728 ギブ and テイク
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-03-11 07:53:04 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 419 ms / 3,000 ms |
| コード長 | 8,670 bytes |
| コンパイル時間 | 3,002 ms |
| コンパイル使用メモリ | 194,460 KB |
| 実行使用メモリ | 16,588 KB |
| 最終ジャッジ日時 | 2024-11-16 00:03:33 |
| 合計ジャッジ時間 | 8,932 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 30 |
ソースコード
#include <bits/stdc++.h>
#define ll long long
#define INF 1000000005
#define MOD 1000000007
#define EPS 1e-10
#define rep(i,n) for(int i=0;i<(int)(n);++i)
#define rrep(i,n) for(int i=(int)(n)-1;i>=0;--i)
#define srep(i,s,t) for(int i=(int)(s);i<(int)(t);++i)
#define each(a,b) for(auto& (a): (b))
#define all(v) (v).begin(),(v).end()
#define len(v) (int)(v).size()
#define zip(v) sort(all(v)),v.erase(unique(all(v)),v.end())
#define cmx(x,y) x=max(x,y)
#define cmn(x,y) x=min(x,y)
#define fi first
#define se second
#define pb push_back
#define show(x) cout<<#x<<" = "<<(x)<<endl
#define sar(a,n) {cout<<#a<<":";rep(pachico,n)cout<<" "<<a[pachico];cout<<endl;}
using namespace std;
template<typename S,typename T>auto&operator<<(ostream&o,pair<S,T>p){return o<<"{"<<p.fi<<","<<p.se<<"}";}
template<typename T>auto&operator<<(ostream&o,set<T>s){for(auto&e:s)o<<e<<" ";return o;}
template<typename S,typename T,typename U>
auto&operator<<(ostream&o,priority_queue<S,T,U>q){while(!q.empty())o<<q.top()<<" ",q.pop();return o;}
template<typename K,typename T>auto&operator<<(ostream&o,map<K,T>&m){for(auto&e:m)o<<e<<" ";return o;}
template<typename T>auto&operator<<(ostream&o,vector<T>v){for(auto&e:v)o<<e<<" ";return o;}
void ashow(){cout<<endl;}template<typename T,typename...A>void ashow(T t,A...a){cout<<t<<" ";ashow(a...);}
template<typename S,typename T,typename U>
struct TRI{S fi;T se;U th;TRI(){}TRI(S f,T s,U t):fi(f),se(s),th(t){}
bool operator<(const TRI&_)const{return(fi==_.fi)?((se==_.se)?(th<_.th):(se<_.se)):(fi<_.fi);}};
template<typename S,typename T,typename U>
auto&operator<<(ostream&o,TRI<S,T,U>&t){return o<<"{"<<t.fi<<","<<t.se<<","<<t.th<<"}";}
typedef pair<int, int> P;
typedef pair<ll, ll> pll;
typedef TRI<int, int, int> tri;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<vi> vvi;
typedef vector<vl> vvl;
typedef vector<P> vp;
typedef vector<double> vd;
typedef vector<string> vs;
const int MAX_N = 100005;
struct BitRank {
// block: bit 列を管理, count: block ごとに立っている 1 の数を管理
vector<unsigned long long> block;
vector<unsigned int> count;
BitRank(){}
void resize(const unsigned int num){
block.resize(((num + 1) >> 6) + 1, 0);
count.resize(block.size(), 0);
}
// i ビット目を val(0,1) にセット
void set(const unsigned int i, const unsigned long long val){
block[i >> 6] |= (val << (i & 63));
}
void build(){
for(unsigned int i = 1; i < block.size(); i++){
count[i] = count[i - 1] + __builtin_popcountll(block[i - 1]);
}
}
// [0, i) ビットの 1 の数
unsigned int rank1(const unsigned int i) const {
return count[i >> 6] +
__builtin_popcountll(block[i >> 6] & ((1ULL << (i & 63)) - 1ULL));
}
// [i, j) ビットの 1 の数
unsigned int rank1(const unsigned int i, const unsigned int j) const {
return rank1(j) - rank1(i);
}
// [0, i) ビットの 0 の数
unsigned int rank0(const unsigned int i) const {
return i - rank1(i);
}
// [i, j) ビットの 0 の数
unsigned int rank0(const unsigned int i, const unsigned int j) const {
return rank0(j) - rank0(i);
}
};
class WaveletMatrix
{
private:
unsigned int height;
vector<BitRank> B;
vector<int> pos;
public:
WaveletMatrix(){}
WaveletMatrix(vector<int> vec) :
WaveletMatrix(vec, *max_element(vec.begin(), vec.end()) + 1){}
// sigma:文字の種類数
WaveletMatrix(vector<int> vec, const unsigned int sigma){
init(vec, sigma);
}
void init(vector<int>& vec, const unsigned int sigma){
height = (sigma == 1) ? 1 : (64 - __builtin_clzll(sigma - 1));
B.resize(height), pos.resize(height);
for(unsigned int i = 0; i < height; ++i){
B[i].resize(vec.size());
for(unsigned int j = 0; j < vec.size(); ++j) {
B[i].set(j, get(vec[j], height - i - 1));
}
B[i].build();
auto it = stable_partition(vec.begin(), vec.end(), [&](int c){
return !get(c, height - i - 1);
});
pos[i] = it - vec.begin();
}
}
// val の i ビット目の値を返す(0,1)
int get(const int val, const int i){
return val >> i & 1;
}
// [l, r) の間に現れる値 val の数
int rank(const int val, const int l, const int r){
return rank(val, r) - rank(val, l);
}
// [0, i) の間に現れる値 val の数
int rank(int val, int i){
int p = 0;
for(unsigned int j = 0; j < height; ++j){
if(get(val, height - j - 1)){
p = pos[j] + B[j].rank1(p);
i = pos[j] + B[j].rank1(i);
}else{
p = B[j].rank0(p);
i = B[j].rank0(i);
}
}
return i - p;
}
// [l, r) の k(0,1,2...) 番目に小さい値を返す
int quantile(int k, int l, int r){
int res = 0;
for(unsigned int i = 0; i < height; ++i){
const int j = B[i].rank0(l, r);
if(j > k){
l = B[i].rank0(l);
r = B[i].rank0(r);
}else{
l = pos[i] + B[i].rank1(l);
r = pos[i] + B[i].rank1(r);
k -= j;
res |= (1 << (height - i - 1));
}
}
return res;
}
int rangefreq(const int i, const int j, const int a, const int b,
const int l, const int r, const int x){
if(i == j || r <= a || b <= l) return 0;
const int mid = (l + r) >> 1;
if(a <= l && r <= b){
return j - i;
}else{
const int left = rangefreq(B[x].rank0(i), B[x].rank0(j), a, b, l, mid, x + 1);
const int right = rangefreq(pos[x] + B[x].rank1(i), pos[x] + B[x].rank1(j),
a, b, mid, r, x + 1);
return left + right;
}
}
// [l,r) で値が [a,b) 内に含まれる数を返す
int rangefreq(const int l, const int r, const int a, const int b){
return rangefreq(l, r, a, b, 0, 1 << height, 0);
}
int rangemin(const int i, const int j, const int a, const int b,
const int l, const int r, const int x, const int val){
if(i == j || r <= a || b <= l) return -1;
if(r - l == 1) return val;
const int mid = (l + r) >> 1;
const int res = rangemin(B[x].rank0(i),B[x].rank0(j),a,b,l,mid,x+1,val);
if(res < 0) return rangemin(pos[x] + B[x].rank1(i), pos[x] + B[x].rank1(j),
a, b, mid, r, x + 1, val + (1 << (height - x - 1)));
else return res;
}
// [l,r) で値が [a,b) 内に最小の数を返す(数が存在しない場合は -1 を返す)
int rangemin(int l, int r, int a, int b){
return rangemin(l, r, a, b, 0, 1 << height, 0, 0);
}
};
template<typename T> class OrthogonalRangeCount
{
private:
using ptt = pair<T, T>;
const int sz;
vector<T> X, Y;
WaveletMatrix wm;
public:
OrthogonalRangeCount(vector<ptt> candidate)
: sz((int)candidate.size()), X(sz), Y(sz){
sort(candidate.begin(), candidate.end());
vector<int> vec(sz);
for(int i = 0; i < sz; ++i){
X[i] = candidate[i].first, Y[i] = candidate[i].second;
}
sort(Y.begin(), Y.end());
Y.erase(unique(Y.begin(), Y.end()), Y.end());
for(int i = 0; i < sz; ++i){
vec[i] = lower_bound(Y.begin(), Y.end(), candidate[i].second) - Y.begin();
}
wm.init(vec, Y.size());
}
//[lx,rx)×[ly,ry)の長方形領域に含まれる点の数を答える
int query(const T lx, const T ly, const T rx, const T ry){
const int lxid = lower_bound(X.begin(), X.end(), lx) - X.begin();
const int rxid = lower_bound(X.begin(), X.end(), rx) - X.begin();
const int lyid = lower_bound(Y.begin(), Y.end(), ly) - Y.begin();
const int ryid = lower_bound(Y.begin(), Y.end(), ry) - Y.begin();
if(lxid >= rxid || lyid >= ryid) return 0;
return wm.rangefreq(lxid, rxid, lyid, ryid);
}
};
int main()
{
cin.tie(0);
ios::sync_with_stdio(false);
int n;
cin >> n;
vi a(n), l(n), r(n);
vp vec(n);
rep(i,n){
cin >> a[i];
}
rep(i,n){
cin >> l[i] >> r[i];
vec[i] = P(a[i], a[i]-l[i]);
}
OrthogonalRangeCount<int> orc(vec);
ll ans = 0;
rep(i,n){
ans += orc.query(a[i]+1, INT_MIN, a[i]+r[i]+1, a[i]+1);
}
cout << ans << "\n";
return 0;
}