Submission #1045233

# Submission time Handle Problem Language Result Execution time Memory
1045233 2024-08-05T19:17:24 Z beaconmc The Big Prize (IOI17_prize) C++14
97.41 / 100
81 ms 2332 KB
#include "prize.h"

#include <bits/stdc++.h>
 
typedef int ll;
#define FOR(i,x,y) for(ll i=x; i<y; i++)
#define FORNEG(i,x,y) for(ll i=x; i>y; i--)
 
using namespace std;


map<ll, vector<ll>> cache;

vector<ll> query(int n){

	if (cache.count(n)) return cache[n];
	else return cache[n] = ask(n);
}


int find_best(int n) {
	cache.clear();
	vector<ll> stuff(n);

	FOR(i,0,n) stuff[i] = i;
	ll maxi = -1;
	FOR(i,0,min(500, n)){
		vector<ll> sus = query(i);
		maxi = max(maxi, sus[0]+sus[1]);
	}
	

	vector<ll> found;

	ll ans = -1;


	while (ans == -1){


		ll lo = 0;
		ll hi = stuff.size()-1;
		bool skip = false;

		while (lo < hi){


			ll mid = (lo+hi)/2;
			ll cur = 1;
			while (cur < 1000){

				if (lo <= mid-cur && cache.count(stuff[mid-cur])){
					mid = mid-cur;
					break;
				}
				if (mid+cur < hi && cache.count(stuff[mid+cur])){
					mid = mid+cur;
					break;
				}
				cur++;
			}


			vector<ll> sus = query(stuff[mid]);


			if (sus[0] + sus[1] < maxi){
					
				if (sus[0]+sus[1]==0) return stuff[mid];
				found.push_back(stuff[mid]);
				stuff.erase(stuff.begin()+mid);
				skip = true;
				break;
			}else{
				sort(found.begin(), found.end());
				ll idk = upper_bound(found.begin(), found.end(), stuff[mid]) - found.begin();

				if (idk < sus[0]){
					hi = mid;
				}else{
					lo = mid+1;
				}
			}
		}

		if (skip) continue;

		vector<ll> sus = query(stuff[lo]);
		if (sus[0]+sus[1] == maxi) break;
		if (sus[0]+sus[1]==0) return stuff[lo];
		found.push_back(stuff[lo]);
		stuff.erase(stuff.begin()+lo);

	}

	return 0;

}
# Verdict Execution time Memory Grader output
1 Correct 4 ms 1112 KB Output is correct
2 Correct 4 ms 1112 KB Output is correct
3 Correct 4 ms 1364 KB Output is correct
4 Correct 5 ms 1112 KB Output is correct
5 Correct 3 ms 1112 KB Output is correct
6 Correct 4 ms 1636 KB Output is correct
7 Correct 3 ms 1368 KB Output is correct
8 Correct 5 ms 1112 KB Output is correct
9 Correct 3 ms 1368 KB Output is correct
10 Correct 3 ms 1112 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 4 ms 1112 KB Output is correct
2 Correct 3 ms 1268 KB Output is correct
3 Correct 4 ms 1516 KB Output is correct
4 Correct 3 ms 1112 KB Output is correct
5 Correct 3 ms 1112 KB Output is correct
6 Correct 4 ms 1196 KB Output is correct
7 Correct 4 ms 1108 KB Output is correct
8 Correct 3 ms 1112 KB Output is correct
9 Correct 3 ms 1112 KB Output is correct
10 Correct 4 ms 1112 KB Output is correct
11 Correct 8 ms 1308 KB Output is correct
12 Correct 3 ms 1112 KB Output is correct
13 Correct 9 ms 1112 KB Output is correct
14 Correct 6 ms 556 KB Output is correct
15 Correct 9 ms 1112 KB Output is correct
16 Correct 54 ms 1868 KB Output is correct
17 Correct 3 ms 1112 KB Output is correct
18 Correct 79 ms 1516 KB Output is correct
19 Correct 3 ms 1112 KB Output is correct
20 Correct 12 ms 856 KB Output is correct
21 Correct 19 ms 1348 KB Output is correct
22 Correct 8 ms 1112 KB Output is correct
23 Correct 3 ms 1112 KB Output is correct
24 Correct 4 ms 1368 KB Output is correct
25 Correct 29 ms 1648 KB Output is correct
26 Correct 37 ms 1428 KB Output is correct
27 Correct 3 ms 1112 KB Output is correct
28 Correct 45 ms 1604 KB Output is correct
29 Correct 36 ms 1776 KB Output is correct
30 Correct 61 ms 1808 KB Output is correct
31 Correct 3 ms 1256 KB Output is correct
32 Correct 9 ms 1368 KB Output is correct
33 Correct 1 ms 344 KB Output is correct
34 Correct 22 ms 1608 KB Output is correct
35 Correct 5 ms 1368 KB Output is correct
36 Correct 15 ms 1624 KB Output is correct
37 Correct 4 ms 1368 KB Output is correct
38 Correct 4 ms 1644 KB Output is correct
39 Correct 24 ms 1620 KB Output is correct
40 Correct 60 ms 1660 KB Output is correct
41 Correct 34 ms 1596 KB Output is correct
42 Correct 37 ms 1688 KB Output is correct
43 Correct 35 ms 2024 KB Output is correct
44 Correct 27 ms 1680 KB Output is correct
45 Correct 19 ms 1532 KB Output is correct
46 Correct 3 ms 1112 KB Output is correct
47 Correct 27 ms 1900 KB Output is correct
48 Correct 50 ms 2016 KB Output is correct
49 Correct 7 ms 1368 KB Output is correct
50 Correct 61 ms 2020 KB Output is correct
51 Correct 27 ms 1880 KB Output is correct
52 Correct 3 ms 1112 KB Output is correct
53 Correct 5 ms 1624 KB Output is correct
54 Correct 25 ms 1612 KB Output is correct
55 Correct 4 ms 1112 KB Output is correct
56 Correct 64 ms 1704 KB Output is correct
57 Correct 41 ms 1620 KB Output is correct
58 Correct 45 ms 1716 KB Output is correct
59 Correct 35 ms 1520 KB Output is correct
60 Correct 37 ms 1620 KB Output is correct
61 Correct 6 ms 1368 KB Output is correct
62 Correct 3 ms 1112 KB Output is correct
63 Correct 4 ms 1112 KB Output is correct
64 Correct 3 ms 1112 KB Output is correct
65 Correct 4 ms 1776 KB Output is correct
66 Correct 26 ms 1548 KB Output is correct
67 Correct 6 ms 1368 KB Output is correct
68 Correct 25 ms 1292 KB Output is correct
69 Correct 19 ms 1368 KB Output is correct
70 Correct 11 ms 1368 KB Output is correct
71 Partially correct 79 ms 2176 KB Partially correct - number of queries: 5259
72 Correct 12 ms 1516 KB Output is correct
73 Partially correct 81 ms 1612 KB Partially correct - number of queries: 5196
74 Partially correct 72 ms 1624 KB Partially correct - number of queries: 5223
75 Correct 7 ms 1740 KB Output is correct
76 Correct 60 ms 1712 KB Output is correct
77 Correct 67 ms 2148 KB Output is correct
78 Correct 11 ms 1748 KB Output is correct
79 Correct 35 ms 1752 KB Output is correct
80 Correct 68 ms 2088 KB Output is correct
81 Correct 67 ms 1940 KB Output is correct
82 Correct 62 ms 1912 KB Output is correct
83 Correct 6 ms 1112 KB Output is correct
84 Correct 56 ms 2332 KB Output is correct
85 Correct 72 ms 2320 KB Output is correct
86 Correct 38 ms 1112 KB Output is correct
87 Correct 4 ms 1112 KB Output is correct
88 Correct 36 ms 1112 KB Output is correct
89 Correct 27 ms 1496 KB Output is correct
90 Correct 4 ms 1624 KB Output is correct
91 Correct 16 ms 1112 KB Output is correct
92 Correct 27 ms 1456 KB Output is correct
93 Correct 36 ms 1368 KB Output is correct
94 Correct 36 ms 1280 KB Output is correct
95 Correct 43 ms 1880 KB Output is correct
96 Correct 48 ms 1368 KB Output is correct
97 Correct 29 ms 1368 KB Output is correct