oj.uz

Submission #731837

# Submission time Handle Problem Language Result Execution time Memory
731837 2023-04-28T04:57:54 Z sentheta The Big Prize (IOI17_prize) C++17
97.67 / 100
 67 ms 6212 KB 
#include "prize.h"
// author : sentheta aka vanwij
#include<iostream>
#include<iomanip>
#include<algorithm>
#include<cassert>
#include<random>
#include<chrono>
#include<cmath>
#include<string>
#include<vector>
#include<bitset>
#include<queue>
#include<stack>
#include<map>
#include<set>
using namespace std;

#define Int long long
#define V vector
#define pii pair<int,int>
#define ff first
#define ss second

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

#define pow2(x) (1LL<<(x))
#define msb(x) (63-__builtin_clzll(x))
#define bitcnt(x) (__builtin_popcountll(x))

#define nl '\n'
#define _ << ' ' <<
#define all(x) (x).begin(), (x).end()
#define rep(i,a,b) for(int i = (int)(a); i < (int)(b); i++)
#define dbg(x) if(1) cout << "?" << #x << " : " << (x) << endl << flush;


const int N = 2e5+5;
V<int> memo[N];
pii query(int i){
	if(memo[i].empty()) memo[i] = ask(i);
	return {memo[i][0], memo[i][1]};
}

int n;

#define mid (tl+tr)/2
#define lc (v+1)
#define rc (v+2*(mid-tl+1))
struct Segtree{
	int cnt[2*N];
	void upd(int i,int v=0,int tl=0,int tr=n-1){
		if(tl==tr){
			cnt[i] = 1; return;
		}
		if(i<=mid) upd(i, lc,tl,mid);
		else upd(i, rc,mid+1,tr);
		cnt[v] = cnt[lc] + cnt[rc];
	}
	int qry(int l,int r,int v=0,int tl=0,int tr=n-1){
		if(r<tl || tr<l) return 0;
		if(l<=tl && tr<=r) return cnt[v];
		return qry(l,r, lc,tl,mid) + qry(l,r, rc,mid+1,tr);
	}
} segtree;
#undef mid



int mx = 0;
int dnc(int lout=0,int rout=0,int l=474,int r=n-1){
	if(l > r) return -1;
	if(lout+rout+segtree.qry(l,r) == mx) return -1;

	int midcnt = 0;
	for(int m=(l+r)/2; m<=r; m++){
		auto[lcnt,rcnt] = query(m);
		if(lcnt+rcnt==0) return m;
		if(lcnt+rcnt < mx){
			midcnt++; continue;
		}

		if(lcnt > lout+midcnt){
			int i = dnc(lout,midcnt+rcnt, l,(l+r)/2-1);
			if(i!=-1) return i;
		}
		if(rcnt > rout){
			int i = dnc(lcnt,rout, m+1,r);
			if(i!=-1) return i;
		}
		return -1;
	}

	for(int m=(l+r)/2-1; m>=l; m--){
		auto[lcnt,rcnt] = query(m);
		if(lcnt+rcnt==0) return m;
		if(lcnt+rcnt < mx){
			midcnt++; continue;
		}
		// assert(rcnt == midcnt + rout);

		if(lcnt > lout){
			int i = dnc(lout,rcnt, l,m-1);
			if(i!=-1) return i;
		}
		return -1;
	}

	return -1;
}

int find_best(int _n){
	n = _n;

	V<int> ord;
	rep(i,0,n){
		ord.push_back(i);
		swap(ord[i], ord[rng()%(i+1)]);
	}


	map<int,V<int>> mp;
	// for(int j=0; j<min(n,474); j++){
	// 	int i = ord[j];
	// for(int i=max(0,n/2-240); i<=min(n-1,n/2+240); i++){
	rep(i,0,474){
		auto[lcnt,rcnt] = query(i);
		if(lcnt+rcnt==0) return i;

		mp[lcnt+rcnt].push_back(i);
		mx = max(mx, lcnt+rcnt);
	}
	assert((int)mp.size()<=5);

	for(auto&[x,v] : mp){
		if(x==mx){

		}
		else{
			for(int i : v){
				segtree.upd(i);
			}
		}
	}

	int ans = dnc();
	return ans;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 6136 KB Output is correct
2 Correct 15 ms 6088 KB Output is correct
3 Correct 13 ms 6212 KB Output is correct
4 Correct 12 ms 6088 KB Output is correct
5 Correct 13 ms 6140 KB Output is correct
6 Correct 10 ms 6140 KB Output is correct
7 Correct 14 ms 6080 KB Output is correct
8 Correct 14 ms 6128 KB Output is correct
9 Correct 13 ms 6080 KB Output is correct
10 Correct 13 ms 6088 KB Output is correct

Subtask #2
77.67 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 6140 KB Output is correct
2 Correct 15 ms 6136 KB Output is correct
3 Correct 15 ms 6136 KB Output is correct
4 Correct 15 ms 6080 KB Output is correct
5 Correct 14 ms 6088 KB Output is correct
6 Correct 10 ms 6140 KB Output is correct
7 Correct 13 ms 6144 KB Output is correct
8 Correct 13 ms 6056 KB Output is correct
9 Correct 11 ms 6040 KB Output is correct
10 Correct 15 ms 6088 KB Output is correct
11 Correct 14 ms 6144 KB Output is correct
12 Correct 13 ms 6140 KB Output is correct
13 Correct 17 ms 6144 KB Output is correct
14 Correct 6 ms 5200 KB Output is correct
15 Correct 14 ms 6140 KB Output is correct
16 Correct 55 ms 6136 KB Output is correct
17 Correct 11 ms 6144 KB Output is correct
18 Correct 53 ms 6080 KB Output is correct
19 Correct 12 ms 6144 KB Output is correct
20 Correct 12 ms 5708 KB Output is correct
21 Correct 25 ms 6116 KB Output is correct
22 Correct 14 ms 6136 KB Output is correct
23 Correct 15 ms 6088 KB Output is correct
24 Correct 13 ms 6052 KB Output is correct
25 Correct 29 ms 6088 KB Output is correct
26 Correct 34 ms 6088 KB Output is correct
27 Correct 11 ms 6144 KB Output is correct
28 Correct 45 ms 6080 KB Output is correct
29 Correct 41 ms 6088 KB Output is correct
30 Correct 42 ms 6140 KB Output is correct
31 Correct 11 ms 6120 KB Output is correct
32 Correct 15 ms 6132 KB Output is correct
33 Correct 3 ms 4944 KB Output is correct
34 Correct 23 ms 6140 KB Output is correct
35 Correct 12 ms 6132 KB Output is correct
36 Correct 23 ms 6088 KB Output is correct
37 Correct 14 ms 6132 KB Output is correct
38 Correct 13 ms 6120 KB Output is correct
39 Correct 29 ms 6088 KB Output is correct
40 Correct 52 ms 6136 KB Output is correct
41 Correct 29 ms 6132 KB Output is correct
42 Correct 38 ms 6144 KB Output is correct
43 Correct 28 ms 6088 KB Output is correct
44 Correct 24 ms 6076 KB Output is correct
45 Correct 28 ms 6088 KB Output is correct
46 Correct 15 ms 6120 KB Output is correct
47 Correct 32 ms 6128 KB Output is correct
48 Correct 46 ms 6132 KB Output is correct
49 Correct 17 ms 6132 KB Output is correct
50 Correct 30 ms 6140 KB Output is correct
51 Correct 29 ms 6108 KB Output is correct
52 Correct 13 ms 6132 KB Output is correct
53 Correct 14 ms 6128 KB Output is correct
54 Correct 30 ms 6140 KB Output is correct
55 Correct 13 ms 6140 KB Output is correct
56 Correct 43 ms 6140 KB Output is correct
57 Correct 31 ms 6128 KB Output is correct
58 Correct 36 ms 6132 KB Output is correct
59 Correct 37 ms 6136 KB Output is correct
60 Correct 35 ms 6132 KB Output is correct
61 Correct 16 ms 6128 KB Output is correct
62 Correct 12 ms 6120 KB Output is correct
63 Correct 15 ms 6144 KB Output is correct
64 Correct 13 ms 6128 KB Output is correct
65 Correct 14 ms 6068 KB Output is correct
66 Correct 14 ms 6088 KB Output is correct
67 Correct 18 ms 6144 KB Output is correct
68 Correct 12 ms 6144 KB Output is correct
69 Correct 15 ms 6144 KB Output is correct
70 Correct 14 ms 6140 KB Output is correct
71 Partially correct 60 ms 6168 KB Partially correct - number of queries: 5233
72 Correct 17 ms 6088 KB Output is correct
73 Partially correct 67 ms 6120 KB Partially correct - number of queries: 5170
74 Partially correct 50 ms 6088 KB Partially correct - number of queries: 5197
75 Correct 16 ms 6088 KB Output is correct
76 Correct 48 ms 6088 KB Output is correct
77 Correct 48 ms 6088 KB Output is correct
78 Correct 17 ms 6088 KB Output is correct
79 Correct 30 ms 6088 KB Output is correct
80 Correct 58 ms 6088 KB Output is correct
81 Correct 60 ms 6088 KB Output is correct
82 Correct 47 ms 6088 KB Output is correct
83 Correct 14 ms 6088 KB Output is correct
84 Correct 51 ms 6088 KB Output is correct
85 Correct 56 ms 6092 KB Output is correct
86 Correct 14 ms 6140 KB Output is correct
87 Correct 11 ms 6088 KB Output is correct
88 Correct 13 ms 6116 KB Output is correct
89 Correct 13 ms 6128 KB Output is correct
90 Correct 14 ms 6088 KB Output is correct
91 Correct 13 ms 6088 KB Output is correct
92 Correct 14 ms 6164 KB Output is correct
93 Correct 17 ms 6088 KB Output is correct
94 Correct 12 ms 6088 KB Output is correct
95 Correct 18 ms 6088 KB Output is correct
96 Correct 16 ms 6092 KB Output is correct
97 Correct 14 ms 6084 KB Output is correct