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답안 #537709

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
537709 2022-03-15T11:56:55 Z cig32 Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++17
17 / 100
 3000 ms 40128 KB 
#include "bits/stdc++.h"
using namespace std;
const int MAXN = 2e5 + 10;
const int MOD = 1e9 + 7;
//#define int long long
 
mt19937_64 rng((int)std::chrono::steady_clock::now().time_since_epoch().count());
int rnd(int x, int y) {
  int u = uniform_int_distribution<int>(x, y)(rng); return u;
}
long long bm(long long b, long long p) { 
  if(p==0) return 1;
  long long r = bm(b, p/2);
  if(p&1) return (((r*r) % MOD) * b) % MOD;
  return (r*r) % MOD;
}

struct wavelet_tree{
	#define vi vector<int>
	#define pb push_back
	int lo, hi;
	wavelet_tree *l, *r;
	vi b;
 
	//nos are in range [x,y]
	//array indices are [from, to)
	wavelet_tree(int *from, int *to, int x, int y){
		lo = x, hi = y;
		if(lo == hi or from >= to) return;
		int mid = (lo+hi)/2;
		auto f = [mid](int x){
			return x <= mid;
		};
		b.reserve(to-from+1);
		b.pb(0);
		for(auto it = from; it != to; it++)
			b.pb(b.back() + f(*it));
		//see how lambda function is used here	
		auto pivot = stable_partition(from, to, f);
		l = new wavelet_tree(from, pivot, lo, mid);
		r = new wavelet_tree(pivot, to, mid+1, hi);
	}
 
	//kth smallest element in [l, r]
	int kth(int l, int r, int k){
		if(l > r) return 0;
		if(lo == hi) return lo;
		int inLeft = b[r] - b[l-1];
		int lb = b[l-1]; //amt of nos in first (l-1) nos that go in left 
		int rb = b[r]; //amt of nos in first (r) nos that go in left
		if(k <= inLeft) return this->l->kth(lb+1, rb , k);
		return this->r->kth(l-lb, r-rb, k-inLeft);
	}
 
	//count of nos in [l, r] Less than or equal to k
	int LTE(int l, int r, int k) {
		if(l > r or k < lo) return 0;
		if(hi <= k) return r - l + 1;
		int lb = b[l-1], rb = b[r];
		return this->l->LTE(lb+1, rb, k) + this->r->LTE(l-lb, r-rb, k);
	}
 
	//count of nos in [l, r] equal to k
	int count(int l, int r, int k) {
		if(l > r or k < lo or k > hi) return 0;
		if(lo == hi) return r - l + 1;
		int lb = b[l-1], rb = b[r], mid = (lo+hi)/2;
		if(k <= mid) return this->l->count(lb+1, rb, k);
		return this->r->count(l-lb, r-rb, k);
	}

  //count max element in [l, r] stricly smaller than k
  int upper_bound(int l, int r, int k) {
    if(l > r) return -1;
    int uwu = LTE(l, r, k - 1);
    if(uwu == 0) return -1;
    return kth(l, r, uwu);
  }
	~wavelet_tree(){
		delete l;
		delete r;
	}
};

int st[20][MAXN];

int query_max(int l, int r) {
  int k = 32 - __builtin_clz(r-l+1) - 1;
  return max(st[k][l], st[k][r-(1<<k)+1]);
}

int ans[20][MAXN];
int a[MAXN];
int upper_bound(int l, int r, int v) {
  if(l > r) return -1;
  int ans = -1;
  for(int i=l; i<=r; i++) {
    if(a[i] < v) ans = max(ans, a[i]);
  }
  return ans;
}

void solve(int tc) {
  int n, m;
  cin >> n >> m;
  for(int i=1; i<=n; i++) {
    cin >> a[i];
    st[0][i] = a[i];
  }
//  wavelet_tree T(a+1, a+n+1, 0, 1000000000);
  for(int i=1; i<20; i++) {
    for(int j=1; j<=n; j++) {
      if(j+(1<<i)-1 <= n) {
        st[i][j] = max(st[i-1][j], st[i-1][j+(1<<(i-1))]);
      }
    }
  }
  for(int i=1; i<=n; i++) {
    ans[0][i] = -1;
  }
  for(int i=1; i<20; i++) {
    for(int j=1; j<=n; j++) {
      if(j+(1<<i)-1 <= n) {
        ans[i][j] = max(ans[i-1][j], ans[i-1][j+(1<<(i-1))]);
        int q1 = query_max(j, j+(1<<(i-1))-1);
        int q2 = upper_bound(j + (1<<(i-1)), j + (1<<i) - 1, q1);
        if(q1 > q2 && q2 != -1) ans[i][j] = max(ans[i][j], q1 + q2);
      }
    }
  }
  while(m--) {
    int l, r, s;
    cin >> l >> r >> s;
    if(l == r) {
      cout << "1\n"; continue;
    }
    int k = 32 - __builtin_clz(r-l+1) - 1;
    int res = max(ans[k][l], ans[k][r-(1<<k)+1]);
    int q1 = query_max(l, l + (1<<k) - 1);
    int q2 = upper_bound(l + (1<<k), r, q1);
    if(q1 > q2 && q2 != -1) res = max(res, q1 + q2);
    cout << (res > s ? "0\n" : "1\n");
  }
}

int32_t main(){
  ios::sync_with_stdio(0); cin.tie(0);
  int t = 1; //cin >> t;
  for(int i=1; i<=t; i++) solve(i);
}

/*
7 1
4 9 1 0 4 0 8 
4 7 4
*/

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 3 ms 592 KB Output is correct
12 Correct 13 ms 916 KB Output is correct
13 Correct 14 ms 852 KB Output is correct
14 Correct 18 ms 852 KB Output is correct
15 Correct 16 ms 904 KB Output is correct
16 Correct 16 ms 920 KB Output is correct
17 Correct 9 ms 852 KB Output is correct
18 Correct 15 ms 852 KB Output is correct

Subtask #3
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 157 ms 40128 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3067 ms 13036 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 3 ms 592 KB Output is correct
12 Correct 13 ms 916 KB Output is correct
13 Correct 14 ms 852 KB Output is correct
14 Correct 18 ms 852 KB Output is correct
15 Correct 16 ms 904 KB Output is correct
16 Correct 16 ms 920 KB Output is correct
17 Correct 9 ms 852 KB Output is correct
18 Correct 15 ms 852 KB Output is correct
19 Execution timed out 3044 ms 27068 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 3 ms 592 KB Output is correct
12 Correct 13 ms 916 KB Output is correct
13 Correct 14 ms 852 KB Output is correct
14 Correct 18 ms 852 KB Output is correct
15 Correct 16 ms 904 KB Output is correct
16 Correct 16 ms 920 KB Output is correct
17 Correct 9 ms 852 KB Output is correct
18 Correct 15 ms 852 KB Output is correct
19 Runtime error 157 ms 40128 KB Execution killed with signal 11
20 Halted 0 ms 0 KB -