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Submission #986116

# Submission time Handle Problem Language Result Execution time Memory
986116 2024-05-19T18:25:02 Z AlphaMale06 The Big Prize (IOI17_prize) C++17
96.39 / 100
 44 ms 11604 KB 
#include <bits/stdc++.h>

#include "prize.h"

using namespace std;
using ll = long long;

vector<int> ask(int i);

vector<int> a[200006];
int summ = 0;

int solve(int l, int r){
    if(l+1>=r)return 0;
    int cnt = a[l][1]-a[r][1];
    if(cnt==0)return 0;
    int s = l+r>>1;
    if(a[s][0]==-1)a[s]=ask(s);
    if(a[s][0]+a[s][1]==summ)return max(solve(l, s), solve(s, r));
    if(a[s][0]+a[s][1]==0)return s;
    int R = s-1, L = s+1;
    for(int i=s-1; i>=l; i--){
        if(a[i][0]==-1)a[i]=ask(i);
        if(a[i][0]+a[i][1]==0)return i;
        if(a[i][0]+a[i][1]==summ){
            R=i;
            break;
        }
    }
    for(int i=s+1; i<=r; i++){
        if(a[i][0]==-1)a[i]=ask(i);
        if(a[i][0]+a[i][1]==0)return i;
        if(a[i][0]+a[i][1]==summ){
            L=i;
            break;
        }
    }
    return max(solve(l, R), solve(L, r));
}

int find_best(int n){
	if(n<=5000){
        for(int i=0; i<n; i++){
            vector<int> ans = ask(i);
            if(ans[0]==0 && ans[1]==0)return i;
        }
	}
	for(int i=0; i< n; i++){
        a[i].push_back(-1);
	}
	int L = -1, R = -1;
    for(int i=0; i<300; i++){
        a[i] = ask(i);
        summ=max(summ, a[i][0]+a[i][1]);
        if(a[i][0]+a[i][1]==0)return i;
    }
    for(int i=n-1; i>=n-300; i--){
        a[i]=ask(i);
        summ=max(summ, a[i][0]+a[i][1]);
        if(a[i][0]+a[i][1]==0)return i;
    }
    for(int i=300; i<n; i++){
        a[i]=ask(i);
        if(a[i][0]+a[i][1]==0)return i;
        if(a[i][0]+a[i][1]==summ){
            L=i;
            break;
        }
    }
    for(int i=n-301; i>=0; i--){
        a[i]=ask(i);
        if(a[i][0]+a[i][1]==0)return i;
        if(a[i][0]+a[i][1]==summ){
            R=i;
            break;
        }
    }
    return solve(L, R);
}

Compilation message

prize.cpp: In function 'int solve(int, int)':
prize.cpp:17:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   17 |     int s = l+r>>1;
      |             ~^~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 11364 KB Output is correct
2 Correct 11 ms 11352 KB Output is correct
3 Correct 12 ms 11348 KB Output is correct
4 Correct 10 ms 11352 KB Output is correct
5 Correct 11 ms 11352 KB Output is correct
6 Correct 9 ms 11352 KB Output is correct
7 Correct 12 ms 11352 KB Output is correct
8 Correct 11 ms 11352 KB Output is correct
9 Correct 11 ms 11352 KB Output is correct
10 Correct 12 ms 11352 KB Output is correct

Subtask #2
76.39 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 11352 KB Output is correct
2 Correct 11 ms 11352 KB Output is correct
3 Correct 11 ms 11352 KB Output is correct
4 Correct 11 ms 11352 KB Output is correct
5 Correct 12 ms 11268 KB Output is correct
6 Correct 8 ms 11352 KB Output is correct
7 Correct 11 ms 11352 KB Output is correct
8 Correct 11 ms 11604 KB Output is correct
9 Correct 11 ms 11352 KB Output is correct
10 Correct 11 ms 11352 KB Output is correct
11 Correct 12 ms 11604 KB Output is correct
12 Correct 15 ms 11352 KB Output is correct
13 Correct 15 ms 11352 KB Output is correct
14 Correct 8 ms 5720 KB Output is correct
15 Partially correct 32 ms 11352 KB Partially correct - number of queries: 5023
16 Partially correct 30 ms 11352 KB Partially correct - number of queries: 5206
17 Partially correct 36 ms 11352 KB Partially correct - number of queries: 5195
18 Partially correct 32 ms 11352 KB Partially correct - number of queries: 5217
19 Correct 31 ms 11352 KB Output is correct
20 Correct 21 ms 8024 KB Output is correct
21 Partially correct 34 ms 11352 KB Partially correct - number of queries: 5152
22 Correct 36 ms 11352 KB Output is correct
23 Correct 13 ms 11352 KB Output is correct
24 Correct 13 ms 11352 KB Output is correct
25 Correct 26 ms 11352 KB Output is correct
26 Correct 39 ms 11352 KB Output is correct
27 Correct 11 ms 11348 KB Output is correct
28 Correct 27 ms 11352 KB Output is correct
29 Correct 35 ms 11352 KB Output is correct
30 Partially correct 35 ms 11352 KB Partially correct - number of queries: 5164
31 Partially correct 39 ms 11352 KB Partially correct - number of queries: 5174
32 Correct 13 ms 11352 KB Output is correct
33 Correct 1 ms 4952 KB Output is correct
34 Partially correct 31 ms 11272 KB Partially correct - number of queries: 5196
35 Correct 13 ms 11352 KB Output is correct
36 Partially correct 31 ms 11352 KB Partially correct - number of queries: 5180
37 Correct 15 ms 11352 KB Output is correct
38 Correct 14 ms 11352 KB Output is correct
39 Partially correct 39 ms 11352 KB Partially correct - number of queries: 5135
40 Correct 32 ms 11352 KB Output is correct
41 Partially correct 31 ms 11352 KB Partially correct - number of queries: 5236
42 Partially correct 31 ms 11352 KB Partially correct - number of queries: 5236
43 Partially correct 40 ms 11352 KB Partially correct - number of queries: 5087
44 Partially correct 33 ms 11352 KB Partially correct - number of queries: 5205
45 Correct 30 ms 11352 KB Output is correct
46 Partially correct 39 ms 11348 KB Partially correct - number of queries: 5229
47 Correct 33 ms 11352 KB Output is correct
48 Partially correct 32 ms 11352 KB Partially correct - number of queries: 5192
49 Partially correct 31 ms 11352 KB Partially correct - number of queries: 5227
50 Partially correct 34 ms 11352 KB Partially correct - number of queries: 5214
51 Partially correct 31 ms 11352 KB Partially correct - number of queries: 5227
52 Partially correct 35 ms 11352 KB Partially correct - number of queries: 5186
53 Correct 11 ms 11352 KB Output is correct
54 Partially correct 30 ms 11352 KB Partially correct - number of queries: 5189
55 Partially correct 39 ms 11352 KB Partially correct - number of queries: 5180
56 Partially correct 44 ms 11352 KB Partially correct - number of queries: 5201
57 Partially correct 28 ms 11348 KB Partially correct - number of queries: 5160
58 Partially correct 42 ms 11352 KB Partially correct - number of queries: 5203
59 Partially correct 29 ms 11352 KB Partially correct - number of queries: 5209
60 Partially correct 32 ms 11352 KB Partially correct - number of queries: 5199
61 Correct 12 ms 11352 KB Output is correct
62 Correct 12 ms 11352 KB Output is correct
63 Correct 11 ms 11352 KB Output is correct
64 Correct 12 ms 11352 KB Output is correct
65 Correct 10 ms 11604 KB Output is correct
66 Correct 10 ms 11352 KB Output is correct
67 Correct 13 ms 11352 KB Output is correct
68 Correct 11 ms 11352 KB Output is correct
69 Correct 11 ms 11292 KB Output is correct
70 Correct 11 ms 11352 KB Output is correct
71 Partially correct 44 ms 11352 KB Partially correct - number of queries: 5361
72 Correct 13 ms 11352 KB Output is correct
73 Partially correct 32 ms 11352 KB Partially correct - number of queries: 5298
74 Partially correct 30 ms 11352 KB Partially correct - number of queries: 5325
75 Correct 11 ms 11352 KB Output is correct
76 Correct 26 ms 11352 KB Output is correct
77 Partially correct 40 ms 11352 KB Partially correct - number of queries: 5317
78 Correct 13 ms 11352 KB Output is correct
79 Correct 20 ms 11348 KB Output is correct
80 Partially correct 30 ms 11352 KB Partially correct - number of queries: 5324
81 Partially correct 38 ms 11352 KB Partially correct - number of queries: 5351
82 Partially correct 37 ms 11352 KB Partially correct - number of queries: 5269
83 Correct 12 ms 11352 KB Output is correct
84 Correct 27 ms 11352 KB Output is correct
85 Partially correct 39 ms 11604 KB Partially correct - number of queries: 5298
86 Correct 11 ms 11352 KB Output is correct
87 Correct 11 ms 11348 KB Output is correct
88 Correct 11 ms 11352 KB Output is correct
89 Correct 11 ms 11352 KB Output is correct
90 Correct 11 ms 11348 KB Output is correct
91 Correct 12 ms 11352 KB Output is correct
92 Correct 11 ms 11352 KB Output is correct
93 Correct 16 ms 11352 KB Output is correct
94 Correct 13 ms 11352 KB Output is correct
95 Correct 14 ms 11352 KB Output is correct
96 Correct 12 ms 11352 KB Output is correct
97 Correct 11 ms 11352 KB Output is correct