oj.uz

Submission #1048454

# Submission time Handle Problem Language Result Execution time Memory
1048454 2024-08-08T07:43:58 Z pcc The Big Prize (IOI17_prize) C++17
20 / 100
 103 ms 4668 KB 
#include "prize.h"
#include <bits/stdc++.h>
#include <bits/extc++.h>
using namespace __gnu_pbds;
using namespace std;


template <typename T>
using ordered_set = tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;
#define pii pair<int,int>
#define fs first
#define sc second

#ifdef LOCAL
const int lim = 3;
const int dt = 5;
#else
const int lim = 5000;
const int dt = 200;
#endif

const int mxn = 2e5+10;
pii dp[mxn];
int N;
int big = 1e9;
int ans = 0;
bool done = false;
int C = 0;
ordered_set<int> st;

pii req(int p){
	if(dp[p].fs != -1)return dp[p];
	C++;
	assert(C<=10000);
	auto re = ask(p);
	return (dp[p] = pii(re[0],re[1]));
}

int check(int p){
	auto re = req(p);
	if(!re.fs&&!re.sc)return 0;
	else if(N-re.fs-re.sc == big)return 2;
	else{
		st.insert(p);
		return 1;
	}
}

void dfs(int l,int r){
	if(done)return;
	cerr<<"DFS: "<<l<<','<<r<<endl;
	while(l<=r){
		if(!check(l)){
			ans = l;
			done = true;
			return;
		}
		else if(check(l) == 1){
			l++;
		}
		else break;
	}
	while(l<=r){
		if(!check(r)){
			ans = r;
			done = true;
			return;
		}
		else if(check(r) == 1){
			r--;
		}
		else break;
	}
	if(l>=r)return;
	int cnt = req(r).fs+req(l).sc-(N-big);
	if(!cnt)return;
	cerr<<"CHECK: "<<l<<','<<r<<','<<cnt<<endl;
	assert(cnt>0);
	int mid = (l+r)>>1;
	if(check(mid) == 0){
		ans = mid;
		done = true;
		return;
	}
	if(l == r)return;
	if(l != mid)dfs(l,mid);
	if(mid != r)dfs(mid,r);
	return;
}

int find_best(int nn) {
	mt19937 seed(time(NULL));
#define rnd(l,r) uniform_int_distribution<int>(l,r)(seed)
	N = nn;
	int pt = 0;
	for(int i = 1;i*i<2e5;i++)pt = i;
	cerr<<pt<<endl;
	for(auto &i:dp)i = pii(-1,-1);
	if(N<=lim){
		for(int i = 0;i<N;i++){
			auto tmp = req(i);
			if(!tmp.fs&&!tmp.sc)return i;
		}
		assert(false);
		return 0;
	}
	for(int i = 0;i<dt;i++){
		auto tmp = req(rnd(0,N-1));
		big = min(big,N-tmp.fs-tmp.sc);
	}
	cerr<<"BIG: "<<big<<endl;
	dfs(0,N-1);
	if(!done)exit(0);
	return ans;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1880 KB Output is correct
2 Correct 2 ms 1880 KB Output is correct
3 Correct 2 ms 1972 KB Output is correct
4 Correct 2 ms 1880 KB Output is correct
5 Correct 2 ms 1880 KB Output is correct
6 Correct 1 ms 1964 KB Output is correct
7 Correct 1 ms 1880 KB Output is correct
8 Correct 3 ms 1880 KB Output is correct
9 Correct 2 ms 1880 KB Output is correct
10 Correct 2 ms 1880 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1880 KB Output is correct
2 Correct 2 ms 1972 KB Output is correct
3 Correct 2 ms 1880 KB Output is correct
4 Correct 2 ms 1880 KB Output is correct
5 Correct 2 ms 1976 KB Output is correct
6 Correct 2 ms 1880 KB Output is correct
7 Correct 2 ms 1976 KB Output is correct
8 Correct 1 ms 1880 KB Output is correct
9 Correct 1 ms 1880 KB Output is correct
10 Correct 2 ms 1880 KB Output is correct
11 Correct 6 ms 1876 KB Output is correct
12 Correct 2 ms 1880 KB Output is correct
13 Correct 12 ms 1880 KB Output is correct
14 Correct 5 ms 1880 KB Output is correct
15 Correct 13 ms 2012 KB Output is correct
16 Correct 73 ms 2228 KB Output is correct
17 Correct 2 ms 1880 KB Output is correct
18 Correct 98 ms 2552 KB Output is correct
19 Correct 2 ms 1880 KB Output is correct
20 Correct 19 ms 2008 KB Output is correct
21 Correct 34 ms 1880 KB Output is correct
22 Correct 7 ms 1880 KB Output is correct
23 Correct 2 ms 1972 KB Output is correct
24 Correct 2 ms 1880 KB Output is correct
25 Correct 38 ms 1880 KB Output is correct
26 Correct 54 ms 2156 KB Output is correct
27 Correct 2 ms 1880 KB Output is correct
28 Correct 69 ms 2052 KB Output is correct
29 Correct 56 ms 2320 KB Output is correct
30 Correct 97 ms 2132 KB Output is correct
31 Correct 1 ms 1880 KB Output is correct
32 Correct 7 ms 1988 KB Output is correct
33 Correct 1 ms 1880 KB Output is correct
34 Correct 25 ms 2044 KB Output is correct
35 Correct 4 ms 1880 KB Output is correct
36 Correct 18 ms 1880 KB Output is correct
37 Correct 3 ms 1880 KB Output is correct
38 Correct 2 ms 1880 KB Output is correct
39 Correct 38 ms 2084 KB Output is correct
40 Correct 73 ms 2128 KB Output is correct
41 Correct 44 ms 1880 KB Output is correct
42 Correct 44 ms 2120 KB Output is correct
43 Correct 66 ms 2272 KB Output is correct
44 Correct 35 ms 2012 KB Output is correct
45 Correct 24 ms 2136 KB Output is correct
46 Correct 2 ms 1880 KB Output is correct
47 Correct 33 ms 2020 KB Output is correct
48 Correct 60 ms 2136 KB Output is correct
49 Correct 8 ms 1880 KB Output is correct
50 Correct 92 ms 2320 KB Output is correct
51 Correct 35 ms 2288 KB Output is correct
52 Correct 2 ms 1880 KB Output is correct
53 Correct 4 ms 1880 KB Output is correct
54 Correct 33 ms 2064 KB Output is correct
55 Correct 3 ms 2136 KB Output is correct
56 Correct 82 ms 2128 KB Output is correct
57 Correct 54 ms 2384 KB Output is correct
58 Correct 70 ms 2216 KB Output is correct
59 Correct 47 ms 2136 KB Output is correct
60 Correct 50 ms 2008 KB Output is correct
61 Correct 4 ms 1880 KB Output is correct
62 Correct 2 ms 1968 KB Output is correct
63 Correct 3 ms 1880 KB Output is correct
64 Correct 2 ms 1880 KB Output is correct
65 Correct 2 ms 1880 KB Output is correct
66 Correct 1 ms 1880 KB Output is correct
67 Correct 4 ms 2136 KB Output is correct
68 Correct 4 ms 2280 KB Output is correct
69 Correct 2 ms 1968 KB Output is correct
70 Correct 3 ms 1880 KB Output is correct
71 Correct 94 ms 2304 KB Output is correct
72 Correct 10 ms 1880 KB Output is correct
73 Correct 93 ms 2128 KB Output is correct
74 Correct 98 ms 2088 KB Output is correct
75 Correct 4 ms 1880 KB Output is correct
76 Correct 77 ms 2128 KB Output is correct
77 Correct 102 ms 2272 KB Output is correct
78 Correct 10 ms 1880 KB Output is correct
79 Correct 57 ms 1880 KB Output is correct
80 Correct 103 ms 2144 KB Output is correct
81 Correct 83 ms 2340 KB Output is correct
82 Correct 93 ms 2324 KB Output is correct
83 Correct 4 ms 1880 KB Output is correct
84 Correct 76 ms 2256 KB Output is correct
85 Correct 82 ms 2128 KB Output is correct
86 Correct 42 ms 2272 KB Output is correct
87 Correct 8 ms 1880 KB Output is correct
88 Correct 34 ms 2580 KB Output is correct
89 Correct 35 ms 2128 KB Output is correct
90 Correct 4 ms 1880 KB Output is correct
91 Correct 25 ms 1880 KB Output is correct
92 Correct 8 ms 1880 KB Output is correct
93 Runtime error 42 ms 4668 KB Execution killed with signal 6
94 Halted 0 ms 0 KB -