oj.uz

Submission #432462

# Submission time Handle Problem Language Result Execution time Memory
432462 2021-06-18T10:22:19 Z jeroenodb The Big Prize (IOI17_prize) C++14
100 / 100
 61 ms 996 KB 
#ifndef GRADER
#include "prize.h"
#endif
#include "bits/stdc++.h"
using namespace std;
#define all(x) begin(x),end(x)
template<typename A, typename B> ostream& operator<<(ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; }
template<typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type> ostream& operator<<(ostream &os, const T_container &v) { string sep; for (const T &x : v) os << sep << x, sep = " "; return os; }
#define debug(a) cerr << "(" << #a << ": " << a << ")\n";
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int,int> pi;
const int mxN = 1e5+1, oo = 1e9;


int find_best(int n) {
	map<int,vi> qs;
	map<int,set<int>> ma;
	set<pi> intervals = {{0,n-1}};
	auto removeivs = [&](int l, int r) {
		intervals.erase(intervals.lower_bound(pi{l,-oo}), intervals.upper_bound(pi{r,-oo}));
	};
	while(!intervals.empty()) {
		auto iv = *intervals.begin();
		intervals.erase(intervals.begin());
		int mid = (iv.first+iv.second+1)/2;
		auto v = qs[mid] = ask(mid);
		int type = v[0]+v[1];
		if(type==0) return mid;
		auto [it,good] = ma[type].insert(mid);
		if(iv.first<=mid-1) intervals.insert(pi{iv.first,mid-1});
		if(mid+1<=iv.second) intervals.insert(pi{mid+1,iv.second});
		if(it==ma[type].begin() ) {
			if(v[0]==0) removeivs(0,mid);
		} else {
			auto vv = qs[*prev(it)];
			if(vv[0]==v[0]) removeivs(*prev(it),mid);
		}
		if(next(it)==ma[type].end()) {
			if(v[1]==0) removeivs(mid,n);
		} else {
			auto vv = qs[*(++it)];
			if(vv[1]==v[1]) removeivs(mid,*it);
		}
	}
	return -1;

}

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:31:8: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   31 |   auto [it,good] = ma[type].insert(mid);
      |        ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 284 KB Output is correct
4 Correct 1 ms 280 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 1 ms 200 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Correct 1 ms 280 KB Output is correct
9 Correct 1 ms 200 KB Output is correct
10 Correct 1 ms 200 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 288 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 1 ms 264 KB Output is correct
6 Correct 1 ms 200 KB Output is correct
7 Correct 1 ms 284 KB Output is correct
8 Correct 0 ms 200 KB Output is correct
9 Correct 1 ms 268 KB Output is correct
10 Correct 1 ms 292 KB Output is correct
11 Correct 2 ms 276 KB Output is correct
12 Correct 2 ms 288 KB Output is correct
13 Correct 6 ms 264 KB Output is correct
14 Correct 3 ms 200 KB Output is correct
15 Correct 8 ms 264 KB Output is correct
16 Correct 56 ms 756 KB Output is correct
17 Correct 1 ms 200 KB Output is correct
18 Correct 58 ms 936 KB Output is correct
19 Correct 1 ms 200 KB Output is correct
20 Correct 9 ms 444 KB Output is correct
21 Correct 22 ms 452 KB Output is correct
22 Correct 6 ms 324 KB Output is correct
23 Correct 2 ms 280 KB Output is correct
24 Correct 2 ms 284 KB Output is correct
25 Correct 18 ms 604 KB Output is correct
26 Correct 28 ms 620 KB Output is correct
27 Correct 1 ms 288 KB Output is correct
28 Correct 34 ms 884 KB Output is correct
29 Correct 38 ms 752 KB Output is correct
30 Correct 54 ms 924 KB Output is correct
31 Correct 1 ms 272 KB Output is correct
32 Correct 5 ms 308 KB Output is correct
33 Correct 1 ms 200 KB Output is correct
34 Correct 16 ms 404 KB Output is correct
35 Correct 3 ms 256 KB Output is correct
36 Correct 13 ms 420 KB Output is correct
37 Correct 2 ms 276 KB Output is correct
38 Correct 1 ms 268 KB Output is correct
39 Correct 28 ms 504 KB Output is correct
40 Correct 40 ms 832 KB Output is correct
41 Correct 18 ms 712 KB Output is correct
42 Correct 31 ms 648 KB Output is correct
43 Correct 25 ms 520 KB Output is correct
44 Correct 19 ms 448 KB Output is correct
45 Correct 17 ms 392 KB Output is correct
46 Correct 1 ms 328 KB Output is correct
47 Correct 17 ms 512 KB Output is correct
48 Correct 42 ms 704 KB Output is correct
49 Correct 3 ms 324 KB Output is correct
50 Correct 53 ms 944 KB Output is correct
51 Correct 23 ms 528 KB Output is correct
52 Correct 1 ms 276 KB Output is correct
53 Correct 2 ms 272 KB Output is correct
54 Correct 21 ms 556 KB Output is correct
55 Correct 1 ms 200 KB Output is correct
56 Correct 52 ms 992 KB Output is correct
57 Correct 24 ms 780 KB Output is correct
58 Correct 41 ms 748 KB Output is correct
59 Correct 29 ms 636 KB Output is correct
60 Correct 25 ms 524 KB Output is correct
61 Correct 3 ms 284 KB Output is correct
62 Correct 1 ms 284 KB Output is correct
63 Correct 2 ms 280 KB Output is correct
64 Correct 1 ms 272 KB Output is correct
65 Correct 2 ms 320 KB Output is correct
66 Correct 1 ms 284 KB Output is correct
67 Correct 1 ms 200 KB Output is correct
68 Correct 1 ms 200 KB Output is correct
69 Correct 2 ms 200 KB Output is correct
70 Correct 1 ms 292 KB Output is correct
71 Correct 42 ms 964 KB Output is correct
72 Correct 8 ms 292 KB Output is correct
73 Correct 48 ms 944 KB Output is correct
74 Correct 57 ms 880 KB Output is correct
75 Correct 1 ms 200 KB Output is correct
76 Correct 52 ms 876 KB Output is correct
77 Correct 49 ms 900 KB Output is correct
78 Correct 6 ms 328 KB Output is correct
79 Correct 31 ms 592 KB Output is correct
80 Correct 54 ms 968 KB Output is correct
81 Correct 61 ms 996 KB Output is correct
82 Correct 46 ms 908 KB Output is correct
83 Correct 2 ms 256 KB Output is correct
84 Correct 39 ms 928 KB Output is correct
85 Correct 49 ms 904 KB Output is correct
86 Correct 6 ms 328 KB Output is correct
87 Correct 3 ms 200 KB Output is correct
88 Correct 8 ms 332 KB Output is correct
89 Correct 6 ms 328 KB Output is correct
90 Correct 2 ms 200 KB Output is correct
91 Correct 4 ms 328 KB Output is correct
92 Correct 1 ms 200 KB Output is correct
93 Correct 3 ms 328 KB Output is correct
94 Correct 4 ms 328 KB Output is correct
95 Correct 4 ms 316 KB Output is correct
96 Correct 6 ms 312 KB Output is correct
97 Correct 1 ms 200 KB Output is correct