Submission #758489

# Submission time Handle Problem Language Result Execution time Memory
758489 2023-06-14T16:37:31 Z Andrey The Big Prize (IOI17_prize) C++14
90 / 100
64 ms 312 KB
#include "prize.h"
#include<bits/stdc++.h>
using namespace std;

int find_best(int n) {
	int y = 0,l,r,m,x,big = 0,z,k;
	for(int i = 0; (i+1)*(i+1) <= n; i++) {
        vector<int> a = ask(i);
        if(a[0] == 0 && a[1] == 0) {
            return i;
        }
        if(a[0]+a[1] > big) {
            big = a[0]+a[1];
            y = i+1;
        }
	}
	k = (int)floor(sqrt(n));
	while(y < n) {
        vector<int> a = ask(y);
        x = a[0];
        z = a[1];
        l = y;
        r = n-1;
        if(x+z == 0) {
            return y;
        }
        for(int i = l+k; i < n; i+=k) {
            a = ask(i);
            if(a[0] == x && a[1] == z) {
                l = i;
            }
            else {
                r = i-1;
                l = r-k+1;
                break;
            }
        }
        while(l < r) {
            m = (l+r+1)/2;
            a = ask(m);
            if(a[0] == x && a[1] == z) {
                l = m;
            }
            else {
                r = m-1;
            }
        }
        a = ask(l+1);
        if(a[0] == 0 && a[1] == 0) {
            return l+1;
        }
        y = l+2;
	}
}

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:54:1: warning: control reaches end of non-void function [-Wreturn-type]
   54 | }
      | ^
# Verdict Execution time Memory Grader output
1 Correct 3 ms 288 KB Output is correct
2 Correct 8 ms 292 KB Output is correct
3 Correct 7 ms 292 KB Output is correct
4 Correct 10 ms 208 KB Output is correct
5 Correct 8 ms 208 KB Output is correct
6 Correct 1 ms 288 KB Output is correct
7 Correct 8 ms 208 KB Output is correct
8 Correct 7 ms 296 KB Output is correct
9 Correct 5 ms 288 KB Output is correct
10 Correct 4 ms 208 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 6 ms 288 KB Output is correct
2 Correct 7 ms 208 KB Output is correct
3 Correct 10 ms 208 KB Output is correct
4 Correct 10 ms 292 KB Output is correct
5 Correct 5 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 8 ms 208 KB Output is correct
8 Correct 5 ms 288 KB Output is correct
9 Correct 4 ms 288 KB Output is correct
10 Correct 8 ms 208 KB Output is correct
11 Correct 10 ms 272 KB Output is correct
12 Correct 8 ms 208 KB Output is correct
13 Correct 20 ms 208 KB Output is correct
14 Correct 5 ms 208 KB Output is correct
15 Correct 14 ms 292 KB Output is correct
16 Partially correct 61 ms 292 KB Partially correct - number of queries: 5138
17 Correct 5 ms 208 KB Output is correct
18 Partially correct 49 ms 208 KB Partially correct - number of queries: 6106
19 Correct 5 ms 288 KB Output is correct
20 Correct 14 ms 208 KB Output is correct
21 Correct 26 ms 208 KB Output is correct
22 Correct 7 ms 292 KB Output is correct
23 Correct 6 ms 208 KB Output is correct
24 Correct 5 ms 208 KB Output is correct
25 Correct 19 ms 288 KB Output is correct
26 Correct 43 ms 208 KB Output is correct
27 Correct 3 ms 292 KB Output is correct
28 Partially correct 64 ms 208 KB Partially correct - number of queries: 5965
29 Correct 48 ms 208 KB Output is correct
30 Partially correct 49 ms 312 KB Partially correct - number of queries: 6049
31 Correct 5 ms 208 KB Output is correct
32 Correct 9 ms 268 KB Output is correct
33 Correct 1 ms 208 KB Output is correct
34 Correct 9 ms 292 KB Output is correct
35 Correct 4 ms 296 KB Output is correct
36 Correct 17 ms 292 KB Output is correct
37 Correct 6 ms 296 KB Output is correct
38 Correct 5 ms 288 KB Output is correct
39 Correct 16 ms 272 KB Output is correct
40 Partially correct 47 ms 208 KB Partially correct - number of queries: 5643
41 Correct 37 ms 292 KB Output is correct
42 Correct 30 ms 268 KB Output is correct
43 Correct 26 ms 208 KB Output is correct
44 Correct 28 ms 208 KB Output is correct
45 Correct 28 ms 208 KB Output is correct
46 Correct 4 ms 208 KB Output is correct
47 Correct 22 ms 208 KB Output is correct
48 Correct 46 ms 208 KB Output is correct
49 Correct 10 ms 272 KB Output is correct
50 Partially correct 63 ms 296 KB Partially correct - number of queries: 6106
51 Correct 29 ms 284 KB Output is correct
52 Correct 7 ms 208 KB Output is correct
53 Correct 10 ms 288 KB Output is correct
54 Correct 28 ms 208 KB Output is correct
55 Correct 4 ms 288 KB Output is correct
56 Partially correct 55 ms 208 KB Partially correct - number of queries: 6107
57 Correct 59 ms 292 KB Output is correct
58 Correct 35 ms 284 KB Output is correct
59 Correct 31 ms 208 KB Output is correct
60 Correct 35 ms 208 KB Output is correct
61 Correct 5 ms 292 KB Output is correct
62 Correct 4 ms 292 KB Output is correct
63 Correct 7 ms 208 KB Output is correct
64 Correct 10 ms 288 KB Output is correct
65 Correct 6 ms 296 KB Output is correct
66 Correct 7 ms 208 KB Output is correct
67 Correct 10 ms 268 KB Output is correct
68 Correct 5 ms 208 KB Output is correct
69 Correct 10 ms 288 KB Output is correct
70 Correct 8 ms 288 KB Output is correct
71 Partially correct 62 ms 208 KB Partially correct - number of queries: 6111
72 Correct 8 ms 208 KB Output is correct
73 Partially correct 52 ms 208 KB Partially correct - number of queries: 6027
74 Partially correct 63 ms 208 KB Partially correct - number of queries: 6063
75 Correct 10 ms 208 KB Output is correct
76 Partially correct 31 ms 208 KB Partially correct - number of queries: 5294
77 Partially correct 60 ms 208 KB Partially correct - number of queries: 6111
78 Correct 10 ms 208 KB Output is correct
79 Correct 25 ms 208 KB Output is correct
80 Partially correct 54 ms 208 KB Partially correct - number of queries: 6109
81 Partially correct 44 ms 208 KB Partially correct - number of queries: 6112
82 Partially correct 45 ms 208 KB Partially correct - number of queries: 6063
83 Correct 8 ms 208 KB Output is correct
84 Partially correct 42 ms 208 KB Partially correct - number of queries: 5122
85 Partially correct 54 ms 208 KB Partially correct - number of queries: 6110
86 Correct 9 ms 208 KB Output is correct
87 Correct 10 ms 296 KB Output is correct
88 Correct 10 ms 208 KB Output is correct
89 Correct 13 ms 208 KB Output is correct
90 Correct 10 ms 292 KB Output is correct
91 Correct 8 ms 208 KB Output is correct
92 Correct 7 ms 208 KB Output is correct
93 Correct 8 ms 208 KB Output is correct
94 Correct 11 ms 208 KB Output is correct
95 Correct 13 ms 208 KB Output is correct
96 Correct 7 ms 208 KB Output is correct
97 Correct 6 ms 208 KB Output is correct