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Submission #790674

# Submission time Handle Problem Language Result Execution time Memory
790674 2023-07-23T05:16:06 Z ymm The Big Prize (IOI17_prize) C++17
100 / 100
 40 ms 1976 KB 
#include "prize.h"
#include <bits/stdc++.h>
#define Loop(x,l,r) for (ll x = (l); x < (r); ++x)
typedef long long ll;
typedef std::pair<int,int> pii;
using namespace std;

jmp_buf jb;
int ans;

const int N = 200'010;
pii table[N];
int n;

pii query(int i) {
	if (table[i] != pii{})
		return table[i];
	auto tmp = ask(i);
	if (tmp[0] + tmp[1] == 0) {
		ans = i;
		longjmp(jb, 1);
	}
	return (table[i] = {tmp[0], tmp[1]});
}

void solve(int l, int r, int cl, int cr, int tot)
{
	if (cl + cr == tot)
		return;
	int m = (l+r)/2;
	Loop (i,0,r-l) {
		int pos = i%2? m-i/2-1: m+i/2;
		auto [x, y] = query(pos);
		if (x + y > tot) {
			solve(0, n, 0, 0, x + y);
			assert(!"unreachable");
		}
		if (x + y < tot)
			continue;
		solve(l, pos, cl, y, tot);
		solve(pos+1, r, x, cr, tot);
		return;
	}
}

int find_best(int n) {
	::n = n;
	if (setjmp(jb))
		return ans;
	auto [x, y] = query(n/2);
	solve(0, n, 0, 0, x+y);
	assert(!"unreachable");
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 296 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 0 ms 308 KB Output is correct
5 Correct 0 ms 300 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 0 ms 300 KB Output is correct
8 Correct 0 ms 300 KB Output is correct
9 Correct 1 ms 208 KB Output is correct
10 Correct 1 ms 336 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 292 KB Output is correct
2 Correct 0 ms 300 KB Output is correct
3 Correct 1 ms 312 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 0 ms 208 KB Output is correct
8 Correct 0 ms 208 KB Output is correct
9 Correct 0 ms 300 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 2 ms 492 KB Output is correct
12 Correct 1 ms 296 KB Output is correct
13 Correct 6 ms 808 KB Output is correct
14 Correct 2 ms 336 KB Output is correct
15 Correct 3 ms 536 KB Output is correct
16 Correct 35 ms 1528 KB Output is correct
17 Correct 1 ms 300 KB Output is correct
18 Correct 22 ms 1792 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 7 ms 588 KB Output is correct
21 Correct 13 ms 840 KB Output is correct
22 Correct 3 ms 464 KB Output is correct
23 Correct 1 ms 300 KB Output is correct
24 Correct 0 ms 304 KB Output is correct
25 Correct 14 ms 1108 KB Output is correct
26 Correct 18 ms 976 KB Output is correct
27 Correct 1 ms 352 KB Output is correct
28 Correct 27 ms 1648 KB Output is correct
29 Correct 12 ms 1524 KB Output is correct
30 Correct 33 ms 1764 KB Output is correct
31 Correct 1 ms 300 KB Output is correct
32 Correct 3 ms 644 KB Output is correct
33 Correct 1 ms 328 KB Output is correct
34 Correct 12 ms 688 KB Output is correct
35 Correct 1 ms 476 KB Output is correct
36 Correct 4 ms 660 KB Output is correct
37 Correct 1 ms 396 KB Output is correct
38 Correct 1 ms 300 KB Output is correct
39 Correct 17 ms 968 KB Output is correct
40 Correct 28 ms 1976 KB Output is correct
41 Correct 22 ms 1128 KB Output is correct
42 Correct 25 ms 1192 KB Output is correct
43 Correct 9 ms 1024 KB Output is correct
44 Correct 7 ms 912 KB Output is correct
45 Correct 10 ms 688 KB Output is correct
46 Correct 1 ms 304 KB Output is correct
47 Correct 18 ms 812 KB Output is correct
48 Correct 30 ms 1384 KB Output is correct
49 Correct 4 ms 424 KB Output is correct
50 Correct 33 ms 1832 KB Output is correct
51 Correct 17 ms 840 KB Output is correct
52 Correct 1 ms 304 KB Output is correct
53 Correct 2 ms 428 KB Output is correct
54 Correct 7 ms 912 KB Output is correct
55 Correct 0 ms 304 KB Output is correct
56 Correct 17 ms 1772 KB Output is correct
57 Correct 28 ms 1348 KB Output is correct
58 Correct 24 ms 1352 KB Output is correct
59 Correct 24 ms 1096 KB Output is correct
60 Correct 10 ms 1128 KB Output is correct
61 Correct 2 ms 464 KB Output is correct
62 Correct 0 ms 336 KB Output is correct
63 Correct 1 ms 432 KB Output is correct
64 Correct 1 ms 336 KB Output is correct
65 Correct 1 ms 300 KB Output is correct
66 Correct 4 ms 300 KB Output is correct
67 Correct 1 ms 300 KB Output is correct
68 Correct 1 ms 336 KB Output is correct
69 Correct 4 ms 296 KB Output is correct
70 Correct 1 ms 344 KB Output is correct
71 Correct 33 ms 1788 KB Output is correct
72 Correct 6 ms 804 KB Output is correct
73 Correct 32 ms 1828 KB Output is correct
74 Correct 40 ms 1840 KB Output is correct
75 Correct 1 ms 464 KB Output is correct
76 Correct 25 ms 1864 KB Output is correct
77 Correct 39 ms 1828 KB Output is correct
78 Correct 5 ms 848 KB Output is correct
79 Correct 22 ms 1716 KB Output is correct
80 Correct 31 ms 1760 KB Output is correct
81 Correct 23 ms 1744 KB Output is correct
82 Correct 30 ms 1736 KB Output is correct
83 Correct 2 ms 464 KB Output is correct
84 Correct 18 ms 1836 KB Output is correct
85 Correct 27 ms 1808 KB Output is correct
86 Correct 4 ms 540 KB Output is correct
87 Correct 2 ms 464 KB Output is correct
88 Correct 4 ms 464 KB Output is correct
89 Correct 5 ms 592 KB Output is correct
90 Correct 1 ms 336 KB Output is correct
91 Correct 6 ms 592 KB Output is correct
92 Correct 6 ms 472 KB Output is correct
93 Correct 3 ms 592 KB Output is correct
94 Correct 4 ms 696 KB Output is correct
95 Correct 3 ms 724 KB Output is correct
96 Correct 3 ms 668 KB Output is correct
97 Correct 0 ms 336 KB Output is correct