oj.uz

Submission #283968

# Submission time Handle Problem Language Result Execution time Memory
283968 2020-08-26T10:07:49 Z erd1 The Big Prize (IOI17_prize) C++14
100 / 100
 61 ms 2072 KB 
#include "prize.h"

#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define ff first
#define ss second
#define all(x) (x).begin(), (x).end()
typedef pair<int, int> pii;
typedef long long lld;
typedef long double ld;

vector<pii> queries;
set<int> sums; // total 5

pii query(int x){
		if(queries[x].ff != -1)return queries[x];
		vector<int> res = ask(x);
		queries[x] = {res[0], res[1]};
		sums.insert(res[0] + res[1]);
		return queries[x];
}

int sum(pii a){ return a.ff + a.ss; }

void finds(int n, int k){
	int l = 0, r = n+1; int c = 0;
	while(true){
		int lmd = l+r>>1, rmd = lmd;
		while(rmd < n && next(sums.find(sum(query(rmd)))) != sums.end()) rmd++;
		while(lmd >= 0 && next(sums.find(sum(query(lmd)))) != sums.end()) lmd--;
		for(int i = lmd; i < rmd; i++)if(query(i).ff + query(i).ss == 0)throw i;
		if(rmd == n || lmd < 0)return;
		if(query(rmd).ff > k && query(lmd).ff <= k)return;
		(query(lmd).ff > k?r:l) = lmd;
		if(c++ > 100)return;
	}
}

int find_best(int n) {
queries.resize(n, {-1, -1});
	try{
		for(int i = 0; i < 6; i++)
			for(int j = 0; j < 2000; j++)finds(n, j);
	}catch(int e){
		return e;
	}
}

Compilation message

prize.cpp: In function 'void finds(int, int)':
prize.cpp:29:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   29 |   int lmd = l+r>>1, rmd = lmd;
      |             ~^~
prize.cpp: In function 'int find_best(int)':
prize.cpp:48:1: warning: control reaches end of non-void function [-Wreturn-type]
   48 | }
      | ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1920 KB Output is correct
2 Correct 3 ms 1912 KB Output is correct
3 Correct 4 ms 1920 KB Output is correct
4 Correct 3 ms 1920 KB Output is correct
5 Correct 3 ms 1920 KB Output is correct
6 Correct 3 ms 1920 KB Output is correct
7 Correct 4 ms 1920 KB Output is correct
8 Correct 3 ms 1920 KB Output is correct
9 Correct 3 ms 1920 KB Output is correct
10 Correct 3 ms 1920 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1920 KB Output is correct
2 Correct 5 ms 1912 KB Output is correct
3 Correct 3 ms 1920 KB Output is correct
4 Correct 4 ms 1920 KB Output is correct
5 Correct 4 ms 1920 KB Output is correct
6 Correct 3 ms 1956 KB Output is correct
7 Correct 4 ms 1920 KB Output is correct
8 Correct 3 ms 1964 KB Output is correct
9 Correct 4 ms 1920 KB Output is correct
10 Correct 3 ms 1920 KB Output is correct
11 Correct 5 ms 1912 KB Output is correct
12 Correct 5 ms 1920 KB Output is correct
13 Correct 8 ms 1912 KB Output is correct
14 Correct 5 ms 512 KB Output is correct
15 Correct 8 ms 1904 KB Output is correct
16 Correct 40 ms 2040 KB Output is correct
17 Correct 4 ms 1920 KB Output is correct
18 Correct 31 ms 1976 KB Output is correct
19 Correct 4 ms 1920 KB Output is correct
20 Correct 12 ms 1152 KB Output is correct
21 Correct 21 ms 1944 KB Output is correct
22 Correct 8 ms 1920 KB Output is correct
23 Correct 3 ms 1920 KB Output is correct
24 Correct 4 ms 1920 KB Output is correct
25 Correct 26 ms 1920 KB Output is correct
26 Correct 32 ms 1920 KB Output is correct
27 Correct 5 ms 1920 KB Output is correct
28 Correct 39 ms 1920 KB Output is correct
29 Correct 40 ms 1948 KB Output is correct
30 Correct 44 ms 1920 KB Output is correct
31 Correct 4 ms 1920 KB Output is correct
32 Correct 8 ms 1920 KB Output is correct
33 Correct 2 ms 384 KB Output is correct
34 Correct 18 ms 2040 KB Output is correct
35 Correct 5 ms 1912 KB Output is correct
36 Correct 14 ms 1920 KB Output is correct
37 Correct 5 ms 1920 KB Output is correct
38 Correct 3 ms 1920 KB Output is correct
39 Correct 27 ms 1920 KB Output is correct
40 Correct 34 ms 2040 KB Output is correct
41 Correct 35 ms 1920 KB Output is correct
42 Correct 25 ms 2072 KB Output is correct
43 Correct 20 ms 1944 KB Output is correct
44 Correct 13 ms 1964 KB Output is correct
45 Correct 19 ms 1920 KB Output is correct
46 Correct 3 ms 1960 KB Output is correct
47 Correct 28 ms 1920 KB Output is correct
48 Correct 35 ms 1912 KB Output is correct
49 Correct 6 ms 1920 KB Output is correct
50 Correct 42 ms 1912 KB Output is correct
51 Correct 12 ms 1976 KB Output is correct
52 Correct 4 ms 1920 KB Output is correct
53 Correct 5 ms 1920 KB Output is correct
54 Correct 19 ms 1920 KB Output is correct
55 Correct 3 ms 2048 KB Output is correct
56 Correct 61 ms 1920 KB Output is correct
57 Correct 34 ms 1920 KB Output is correct
58 Correct 32 ms 1920 KB Output is correct
59 Correct 25 ms 2040 KB Output is correct
60 Correct 24 ms 1920 KB Output is correct
61 Correct 4 ms 1920 KB Output is correct
62 Correct 3 ms 1920 KB Output is correct
63 Correct 5 ms 1920 KB Output is correct
64 Correct 4 ms 1920 KB Output is correct
65 Correct 3 ms 1976 KB Output is correct
66 Correct 8 ms 1912 KB Output is correct
67 Correct 8 ms 1920 KB Output is correct
68 Correct 8 ms 1920 KB Output is correct
69 Correct 9 ms 1920 KB Output is correct
70 Correct 6 ms 1920 KB Output is correct
71 Correct 48 ms 2040 KB Output is correct
72 Correct 6 ms 2048 KB Output is correct
73 Correct 49 ms 1948 KB Output is correct
74 Correct 46 ms 1920 KB Output is correct
75 Correct 5 ms 1920 KB Output is correct
76 Correct 51 ms 1920 KB Output is correct
77 Correct 54 ms 1920 KB Output is correct
78 Correct 8 ms 2040 KB Output is correct
79 Correct 25 ms 1920 KB Output is correct
80 Correct 58 ms 2040 KB Output is correct
81 Correct 55 ms 1920 KB Output is correct
82 Correct 47 ms 2040 KB Output is correct
83 Correct 4 ms 1920 KB Output is correct
84 Correct 41 ms 1920 KB Output is correct
85 Correct 43 ms 1920 KB Output is correct
86 Correct 9 ms 1984 KB Output is correct
87 Correct 5 ms 1920 KB Output is correct
88 Correct 11 ms 1920 KB Output is correct
89 Correct 11 ms 1920 KB Output is correct
90 Correct 4 ms 1920 KB Output is correct
91 Correct 6 ms 1920 KB Output is correct
92 Correct 12 ms 1920 KB Output is correct
93 Correct 7 ms 1920 KB Output is correct
94 Correct 7 ms 1920 KB Output is correct
95 Correct 8 ms 1920 KB Output is correct
96 Correct 6 ms 1920 KB Output is correct
97 Correct 3 ms 1920 KB Output is correct