oj.uz

Submission #104230

# Submission time Handle Problem Language Result Execution time Memory
104230 2019-04-04T10:41:19 Z RockyB The Big Prize (IOI17_prize) C++17
90 / 100
 83 ms 512 KB 
/// In The Name Of God
 
#include <bits/stdc++.h>
#ifndef IOI2018
#include "prize.h"
#endif
 
#define f first
#define s second
 
#define pb push_back
#define pp pop_back
#define mp make_pair
 
#define sz(x) (int)x.size()
#define sqr(x) ((x) * 1ll * (x))
#define all(x) x.begin(), x.end()
 
#define rep(i, l, r) for (int i = (l); i < (r); i++)
#define per(i, l, r) for (int i = (l); i >= (r); i--)
 
#define Kazakhstan ios_base :: sync_with_stdio(0), cin.tie(0), cout.tie(0);
 
#define nl '\n'
#define ioi exit(0);
 
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
 
const int N = (int)5e5 + 7;
const int inf = (int)1e9 + 7;
const int mod = (int)1e9 + 7;
const ll linf = (ll)1e18 + 7;
 
const int dx[] = {-1, 0, 1, 0, 1, -1, -1, 1};
const int dy[] = {0, 1, 0, -1, 1, -1, 1, -1};
 
using namespace std;
 
namespace com {
	static const int max_q = 10000;
	static int n;
	static int query_count = 0;
	static vector<int> g;
	static vector<vector<int> > rank_count;
 
}
 
namespace grader {
	using namespace com;
	vector<int> ask(int i) {
		query_count++;
		if(query_count > max_q) {
			cerr << "Query limit exceeded" << endl;
			exit(0);
		}
 
		if(i < 0 || i >= n) {
			cerr << "Bad index: " << i << endl;
			exit(0);
		}
 
		vector<int> res(2);
		res[0] = rank_count[g[i] - 1][i + 1];
		res[1] = rank_count[g[i] - 1][n] - res[0];
		return res;
	}
}
#ifdef IOI2018
using namespace grader;
#endif
 
int solve(int p, int n) {
	while (p < n) {
		int l = p + 1, r = n - 1, res = p;
		vector <int> cur = ask(p);
		while (l <= r) {
			int mid = l + r >> 1;
			vector <int> now = ask(mid);
			if ((now[0] + now[1] == cur[0] + cur[1]) && now[0] == cur[0]) {
				res = mid, l = mid + 1;
			}
			else r = mid - 1;
		}
		++res;
		while (res < n) {
			vector <int> now = ask(res);
			if (!max(now[0], now[1])) return res;
			if (now[0] + now[1] == cur[0] + cur[1]) break;
			++res;
		}
		p = res;
	}
	assert(0);
}
int find_best(int n) {
	int mx = -1, p = -1;
	rep(i, 0, min(500, n)) {
		#ifndef IOI2018
		vector <int> a = ask(i);
		#endif
		#ifdef IOI2018
		vector <int> a = grader :: ask(i);
		#endif
		if (a[0] + a[1] == 0) return i;
		if (a[0] + a[1] > mx) {
			mx = a[0] + a[1];
			p = i;
		}
        if (mx >= 52) break;
	}
	return solve(p, n);
} 
 
namespace read {
	using namespace com;
	void read() {
		cin >> n;
		g.resize(n);
		for(int i = 0; i < n; i++) {
			cin >> g[i];
			if(g[i] < 1) {
				cerr << "Invalid rank " << g[i] << " at index " << i << endl;
				exit(0);
			}
		}
 
		int max_rank = *max_element(g.begin(), g.end());
		rank_count.resize(max_rank + 1, vector<int>(n + 1, 0));
		for(int r = 0; r <= max_rank; r++) {
			for(int i = 1; i <= n; i++) {
				rank_count[r][i] = rank_count[r][i - 1];
				if(g[i - 1] == r)
				  rank_count[r][i]++;
			}
		}
 
		for(int i = 0; i <= n; i++)
			for(int r = 1; r <= max_rank; r++)
				rank_count[r][i] += rank_count[r - 1][i];
 
		int res = find_best(n);
		cout << res;
		ioi
		cout << res << endl << "Query count: " << query_count << endl;
		ioi
	}
}
 
#ifdef IOI2018
int main() {
	#ifdef IOI2018
		freopen ("in.txt", "r", stdin);
		freopen ("D.out", "w", stdout);
	#endif
	read :: read();
}
#endif

Compilation message

prize.cpp: In function 'int solve(int, int)':
prize.cpp:79:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    int mid = l + r >> 1;
              ~~^~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 256 KB Output is correct
2 Correct 8 ms 384 KB Output is correct
3 Correct 6 ms 256 KB Output is correct
4 Correct 6 ms 256 KB Output is correct
5 Correct 7 ms 384 KB Output is correct
6 Correct 2 ms 404 KB Output is correct
7 Correct 6 ms 304 KB Output is correct
8 Correct 5 ms 504 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 8 ms 256 KB Output is correct

Subtask #2
70.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 396 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 6 ms 256 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 8 ms 256 KB Output is correct
8 Correct 7 ms 304 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 6 ms 384 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 4 ms 392 KB Output is correct
13 Correct 11 ms 256 KB Output is correct
14 Correct 6 ms 256 KB Output is correct
15 Correct 6 ms 396 KB Output is correct
16 Partially correct 57 ms 256 KB Partially correct - number of queries: 7724
17 Correct 3 ms 384 KB Output is correct
18 Partially correct 70 ms 384 KB Partially correct - number of queries: 9081
19 Correct 2 ms 256 KB Output is correct
20 Correct 24 ms 256 KB Output is correct
21 Correct 33 ms 384 KB Output is correct
22 Correct 7 ms 384 KB Output is correct
23 Correct 4 ms 512 KB Output is correct
24 Correct 4 ms 312 KB Output is correct
25 Partially correct 37 ms 396 KB Partially correct - number of queries: 5126
26 Partially correct 38 ms 256 KB Partially correct - number of queries: 5040
27 Correct 5 ms 304 KB Output is correct
28 Partially correct 64 ms 256 KB Partially correct - number of queries: 8611
29 Partially correct 26 ms 376 KB Partially correct - number of queries: 6539
30 Partially correct 31 ms 396 KB Partially correct - number of queries: 9020
31 Correct 3 ms 376 KB Output is correct
32 Correct 11 ms 256 KB Output is correct
33 Correct 2 ms 256 KB Output is correct
34 Correct 11 ms 304 KB Output is correct
35 Correct 8 ms 256 KB Output is correct
36 Correct 20 ms 384 KB Output is correct
37 Correct 9 ms 384 KB Output is correct
38 Correct 6 ms 312 KB Output is correct
39 Correct 27 ms 256 KB Output is correct
40 Partially correct 50 ms 256 KB Partially correct - number of queries: 7706
41 Partially correct 36 ms 256 KB Partially correct - number of queries: 5418
42 Partially correct 23 ms 376 KB Partially correct - number of queries: 5418
43 Correct 26 ms 284 KB Output is correct
44 Correct 34 ms 312 KB Output is correct
45 Correct 35 ms 256 KB Output is correct
46 Correct 3 ms 256 KB Output is correct
47 Correct 25 ms 384 KB Output is correct
48 Partially correct 42 ms 428 KB Partially correct - number of queries: 6701
49 Correct 8 ms 308 KB Output is correct
50 Partially correct 36 ms 256 KB Partially correct - number of queries: 9078
51 Correct 29 ms 384 KB Output is correct
52 Correct 2 ms 308 KB Output is correct
53 Correct 8 ms 256 KB Output is correct
54 Correct 31 ms 304 KB Output is correct
55 Correct 3 ms 308 KB Output is correct
56 Partially correct 47 ms 308 KB Partially correct - number of queries: 9080
57 Partially correct 23 ms 308 KB Partially correct - number of queries: 6619
58 Partially correct 29 ms 256 KB Partially correct - number of queries: 6732
59 Partially correct 44 ms 256 KB Partially correct - number of queries: 5418
60 Partially correct 36 ms 264 KB Partially correct - number of queries: 5029
61 Correct 4 ms 384 KB Output is correct
62 Correct 6 ms 256 KB Output is correct
63 Correct 5 ms 256 KB Output is correct
64 Correct 7 ms 384 KB Output is correct
65 Correct 4 ms 376 KB Output is correct
66 Correct 7 ms 384 KB Output is correct
67 Correct 2 ms 512 KB Output is correct
68 Correct 4 ms 384 KB Output is correct
69 Correct 3 ms 384 KB Output is correct
70 Correct 2 ms 256 KB Output is correct
71 Partially correct 62 ms 256 KB Partially correct - number of queries: 9205
72 Correct 11 ms 256 KB Output is correct
73 Partially correct 58 ms 384 KB Partially correct - number of queries: 9084
74 Partially correct 58 ms 284 KB Partially correct - number of queries: 9131
75 Correct 5 ms 256 KB Output is correct
76 Partially correct 60 ms 384 KB Partially correct - number of queries: 7859
77 Partially correct 59 ms 256 KB Partially correct - number of queries: 9098
78 Correct 6 ms 396 KB Output is correct
79 Correct 15 ms 512 KB Output is correct
80 Partially correct 64 ms 384 KB Partially correct - number of queries: 9086
81 Partially correct 58 ms 256 KB Partially correct - number of queries: 9082
82 Partially correct 67 ms 384 KB Partially correct - number of queries: 9043
83 Correct 8 ms 256 KB Output is correct
84 Partially correct 61 ms 256 KB Partially correct - number of queries: 7405
85 Partially correct 83 ms 256 KB Partially correct - number of queries: 9081
86 Correct 4 ms 384 KB Output is correct
87 Correct 8 ms 428 KB Output is correct
88 Correct 6 ms 384 KB Output is correct
89 Correct 6 ms 384 KB Output is correct
90 Correct 5 ms 412 KB Output is correct
91 Correct 6 ms 256 KB Output is correct
92 Correct 5 ms 256 KB Output is correct
93 Correct 10 ms 304 KB Output is correct
94 Correct 10 ms 256 KB Output is correct
95 Correct 9 ms 384 KB Output is correct
96 Correct 8 ms 256 KB Output is correct
97 Correct 5 ms 384 KB Output is correct