oj.uz

Submission #797550

# Submission time Handle Problem Language Result Execution time Memory
797550 2023-07-29T15:42:13 Z alvingogo The Big Prize (IOI17_prize) C++14
100 / 100
 45 ms 860 KB 
#include "prize.h"
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#define AquA cin.tie(0);ios_base::sync_with_stdio(0);
#define fs first
#define sc second
#define p_q priority_queue
using namespace std;

map<int,vector<int> > m;
int c=0,k=0;
set<int> s;
vector<int> query(int x){
	if(m.find(x)==m.end()){
		m[x]=ask(x);
		return m[x];
	}
	return m[x];
}
mt19937 rnd(43243214);
int find_best(int n) {
	if(n<=5000){
		for(int i=0;i<n;i++){
			auto h=query(i);
			if(h[0]==0 && h[1]==0){
				return i;
			}
		}
	}
	queue<pair<int,int> > q2;
	q2.push({-1,n});
	int cr=0;;
	while(q2.size() && cr<480){
		auto h=q2.front();
		q2.pop();
		int x=(h.fs+h.sc)/2;
		k=max(k,query(x)[0]+query(x)[1]);
		q2.push({h.fs,x});
		q2.push({x,h.sc});
		cr++;
	}
	m[-1]={0,k};
	m[n]={k,0};
	queue<pair<int,int> > q;
	q.push({-1,n});
	while(q.size()){
		auto h=q.front();
		q.pop();
		int cz=0;
		for(auto it=s.lower_bound(h.fs);it!=s.end() && (*it)<h.sc;it++){
			cz++;
		}
		if(query(h.fs)[0]==query(h.sc)[0]-cz){
			continue;
		}
		int x=(h.fs+h.sc)/2;
		int flag=0;
		for(int i=x;i>h.fs;i--){
			auto y=query(i);
			if(y[0]+y[1]==k){
				q.push({i,h.sc});
				q.push({h.fs,i});
				flag=1;
				break;
			}
			else{
				s.insert(i);
			}
		}
		if(flag==0){
			for(int i=x+1;i<h.sc;i++){
				auto y=query(i);
				if(y[0]+y[1]==k){
					q.push({i,h.sc});
					flag=1;
					break;
				}
				else{
					s.insert(i);
				}
			}
		}
	}
	for(auto h:s){
		if(query(h)[0]==0 && query(h)[1]==0){
			return h;
		}
	}
	return 0;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 336 KB Output is correct
2 Correct 4 ms 336 KB Output is correct
3 Correct 3 ms 292 KB Output is correct
4 Correct 4 ms 336 KB Output is correct
5 Correct 5 ms 340 KB Output is correct
6 Correct 4 ms 336 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 2 ms 332 KB Output is correct
9 Correct 2 ms 332 KB Output is correct
10 Correct 5 ms 312 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 336 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 4 ms 304 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 4 ms 352 KB Output is correct
6 Correct 5 ms 340 KB Output is correct
7 Correct 4 ms 296 KB Output is correct
8 Correct 4 ms 336 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 5 ms 336 KB Output is correct
11 Correct 5 ms 336 KB Output is correct
12 Correct 7 ms 296 KB Output is correct
13 Correct 7 ms 292 KB Output is correct
14 Correct 10 ms 388 KB Output is correct
15 Correct 19 ms 776 KB Output is correct
16 Correct 43 ms 712 KB Output is correct
17 Correct 35 ms 804 KB Output is correct
18 Correct 20 ms 776 KB Output is correct
19 Correct 30 ms 712 KB Output is correct
20 Correct 14 ms 708 KB Output is correct
21 Correct 33 ms 684 KB Output is correct
22 Correct 19 ms 588 KB Output is correct
23 Correct 5 ms 292 KB Output is correct
24 Correct 8 ms 348 KB Output is correct
25 Correct 42 ms 672 KB Output is correct
26 Correct 26 ms 800 KB Output is correct
27 Correct 3 ms 364 KB Output is correct
28 Correct 24 ms 696 KB Output is correct
29 Correct 32 ms 648 KB Output is correct
30 Correct 25 ms 788 KB Output is correct
31 Correct 38 ms 680 KB Output is correct
32 Correct 6 ms 352 KB Output is correct
33 Correct 0 ms 208 KB Output is correct
34 Correct 20 ms 760 KB Output is correct
35 Correct 2 ms 336 KB Output is correct
36 Correct 30 ms 720 KB Output is correct
37 Correct 7 ms 336 KB Output is correct
38 Correct 3 ms 364 KB Output is correct
39 Correct 29 ms 768 KB Output is correct
40 Correct 28 ms 732 KB Output is correct
41 Correct 42 ms 712 KB Output is correct
42 Correct 42 ms 744 KB Output is correct
43 Correct 38 ms 752 KB Output is correct
44 Correct 19 ms 772 KB Output is correct
45 Correct 32 ms 688 KB Output is correct
46 Correct 42 ms 712 KB Output is correct
47 Correct 35 ms 860 KB Output is correct
48 Correct 38 ms 700 KB Output is correct
49 Correct 44 ms 704 KB Output is correct
50 Correct 19 ms 788 KB Output is correct
51 Correct 43 ms 704 KB Output is correct
52 Correct 33 ms 788 KB Output is correct
53 Correct 3 ms 360 KB Output is correct
54 Correct 41 ms 732 KB Output is correct
55 Correct 40 ms 788 KB Output is correct
56 Correct 39 ms 772 KB Output is correct
57 Correct 37 ms 768 KB Output is correct
58 Correct 33 ms 716 KB Output is correct
59 Correct 20 ms 780 KB Output is correct
60 Correct 39 ms 712 KB Output is correct
61 Correct 5 ms 336 KB Output is correct
62 Correct 5 ms 336 KB Output is correct
63 Correct 5 ms 300 KB Output is correct
64 Correct 5 ms 296 KB Output is correct
65 Correct 4 ms 328 KB Output is correct
66 Correct 9 ms 336 KB Output is correct
67 Correct 9 ms 336 KB Output is correct
68 Correct 4 ms 372 KB Output is correct
69 Correct 4 ms 368 KB Output is correct
70 Correct 5 ms 292 KB Output is correct
71 Correct 43 ms 712 KB Output is correct
72 Correct 6 ms 352 KB Output is correct
73 Correct 43 ms 784 KB Output is correct
74 Correct 41 ms 784 KB Output is correct
75 Correct 5 ms 348 KB Output is correct
76 Correct 38 ms 676 KB Output is correct
77 Correct 37 ms 780 KB Output is correct
78 Correct 5 ms 332 KB Output is correct
79 Correct 15 ms 536 KB Output is correct
80 Correct 32 ms 764 KB Output is correct
81 Correct 32 ms 708 KB Output is correct
82 Correct 39 ms 688 KB Output is correct
83 Correct 4 ms 336 KB Output is correct
84 Correct 36 ms 608 KB Output is correct
85 Correct 39 ms 788 KB Output is correct
86 Correct 32 ms 808 KB Output is correct
87 Correct 8 ms 336 KB Output is correct
88 Correct 39 ms 756 KB Output is correct
89 Correct 40 ms 744 KB Output is correct
90 Correct 3 ms 336 KB Output is correct
91 Correct 22 ms 720 KB Output is correct
92 Correct 23 ms 668 KB Output is correct
93 Correct 33 ms 824 KB Output is correct
94 Correct 45 ms 740 KB Output is correct
95 Correct 41 ms 752 KB Output is correct
96 Correct 44 ms 768 KB Output is correct
97 Correct 41 ms 776 KB Output is correct