oj.uz

Submission #554608

# Submission time Handle Problem Language Result Execution time Memory
554608 2022-04-28T22:19:50 Z yoavL A Difficult(y) Choice (BOI21_books) C++14
100 / 100
 2 ms 1064 KB 
#include <bits/stdc++.h>

#include "books.h"

#define pr(x) cout << x << endl
#define wpr(x) cout << #x << ": " << x << endl
#define rep(i, s, e) for(ll i = s; i < e ; i++)
#define upmin(a, b) (a) = min((ll)a, (ll)b)


using namespace std;
using ll = long long;
using vll = vector<ll>;
using vi = vector<int>;


//
// --- Sample implementation for the task books ---
//
// To compile this program with the sample grader, place:
//     books.h books_sample.cpp sample_grader.cpp
// in a single folder and run:
//     g++ books_sample.cpp sample_grader.cpp
// in this folder.
//

vll a;
ll n, k, A, s;
ll leftmostBig;
ll arr(ll i)
{
    if(a[i] == -1) a[i] = skim(i+1);
    return a[i];
}

// Finds the left-most index whose value is at least A
void find_leftmost_big()
{
    ll l = 0, h = n-1, m;
    leftmostBig = n;
    while(l <= h) {
        m = (l+h) / 2;
        if(arr(m) >= A) {
            upmin(leftmostBig, m);
            h = m - 1;
        }
        else {
            l = m + 1;
        }
    }
}

void make_answer(vll& inds)
{
    vi res(k);
    rep(i, 0, k) res[i] = inds[i]+1;
    answer(res);
}

bool is_good(ll v)
{
    return A <= v && v <= 2*A;
}

ll sum(vll& inds)
{
    ll tot = 0;
    for(const auto& ind : inds) {
        tot += arr(ind);
    }
    return tot;
}

bool use_big()
{
    if(leftmostBig < k) return false;
    if(leftmostBig == n) return false;
    vll inds;
    rep(i, 0, k-(ll)1) inds.push_back(i);
    inds.push_back(leftmostBig);
    if(is_good(sum(inds))) {
        make_answer(inds);
        return true;
    }
    return false;
}


bool all_small()
{
    vll inds(k);
    rep(i, 0, k) inds[i] = i;
    if(is_good(sum(inds))) {
        make_answer(inds);
        return true;
    }
    if(sum(inds) > 2*A) return false;
    for(ll i = k - 1, j = 0; i >= 0; i--, j++) {
        inds[i] = leftmostBig - 1 - j;
        if(is_good(sum(inds))) {
            make_answer(inds);
            return true;
        }
    }
    return false;
}


void solve(int N, int K, long long Aq, int S) {
    //pr("solving");
    n = N, k = K, A = Aq, s = S;
    a.resize(n, -1);
    find_leftmost_big();
    //wpr(leftmostBig);
    if(use_big()) return;
    if(all_small()) return;
    impossible();
}



/*

6 3 5 1000

1 2 8 9 10 11

*/

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 0 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 1 ms 464 KB Output is correct
10 Correct 1 ms 516 KB Output is correct
11 Correct 1 ms 464 KB Output is correct
12 Correct 1 ms 464 KB Output is correct
13 Correct 1 ms 464 KB Output is correct
14 Correct 1 ms 464 KB Output is correct
15 Correct 1 ms 464 KB Output is correct
16 Correct 1 ms 464 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 976 KB Output is correct
2 Correct 1 ms 976 KB Output is correct
3 Correct 1 ms 1060 KB Output is correct
4 Correct 1 ms 976 KB Output is correct
5 Correct 1 ms 1056 KB Output is correct
6 Correct 1 ms 1060 KB Output is correct
7 Correct 1 ms 1060 KB Output is correct
8 Correct 1 ms 1056 KB Output is correct
9 Correct 1 ms 976 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 976 KB Output is correct
2 Correct 1 ms 976 KB Output is correct
3 Correct 1 ms 1060 KB Output is correct
4 Correct 1 ms 976 KB Output is correct
5 Correct 1 ms 1056 KB Output is correct
6 Correct 1 ms 1060 KB Output is correct
7 Correct 1 ms 1060 KB Output is correct
8 Correct 1 ms 1056 KB Output is correct
9 Correct 1 ms 976 KB Output is correct
10 Correct 1 ms 976 KB Output is correct
11 Correct 1 ms 976 KB Output is correct
12 Correct 1 ms 976 KB Output is correct
13 Correct 2 ms 976 KB Output is correct
14 Correct 1 ms 976 KB Output is correct
15 Correct 1 ms 976 KB Output is correct
16 Correct 1 ms 976 KB Output is correct
17 Correct 1 ms 976 KB Output is correct
18 Correct 1 ms 976 KB Output is correct
19 Correct 1 ms 976 KB Output is correct
20 Correct 2 ms 976 KB Output is correct
21 Correct 1 ms 976 KB Output is correct
22 Correct 1 ms 976 KB Output is correct
23 Correct 1 ms 976 KB Output is correct
24 Correct 1 ms 976 KB Output is correct
25 Correct 1 ms 976 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 976 KB Output is correct
2 Correct 1 ms 976 KB Output is correct
3 Correct 1 ms 1060 KB Output is correct
4 Correct 1 ms 976 KB Output is correct
5 Correct 1 ms 1056 KB Output is correct
6 Correct 1 ms 1060 KB Output is correct
7 Correct 1 ms 1060 KB Output is correct
8 Correct 1 ms 1056 KB Output is correct
9 Correct 1 ms 976 KB Output is correct
10 Correct 1 ms 976 KB Output is correct
11 Correct 1 ms 976 KB Output is correct
12 Correct 1 ms 976 KB Output is correct
13 Correct 2 ms 976 KB Output is correct
14 Correct 1 ms 976 KB Output is correct
15 Correct 1 ms 976 KB Output is correct
16 Correct 1 ms 976 KB Output is correct
17 Correct 1 ms 976 KB Output is correct
18 Correct 1 ms 976 KB Output is correct
19 Correct 1 ms 976 KB Output is correct
20 Correct 2 ms 976 KB Output is correct
21 Correct 1 ms 976 KB Output is correct
22 Correct 1 ms 976 KB Output is correct
23 Correct 1 ms 976 KB Output is correct
24 Correct 1 ms 976 KB Output is correct
25 Correct 1 ms 976 KB Output is correct
26 Correct 1 ms 976 KB Output is correct
27 Correct 1 ms 976 KB Output is correct
28 Correct 1 ms 976 KB Output is correct
29 Correct 1 ms 976 KB Output is correct
30 Correct 2 ms 976 KB Output is correct
31 Correct 2 ms 976 KB Output is correct
32 Correct 1 ms 976 KB Output is correct
33 Correct 1 ms 976 KB Output is correct
34 Correct 1 ms 976 KB Output is correct
35 Correct 1 ms 976 KB Output is correct
36 Correct 1 ms 976 KB Output is correct
37 Correct 1 ms 976 KB Output is correct
38 Correct 1 ms 976 KB Output is correct
39 Correct 1 ms 976 KB Output is correct
40 Correct 1 ms 976 KB Output is correct
41 Correct 1 ms 976 KB Output is correct
42 Correct 1 ms 1064 KB Output is correct
43 Correct 1 ms 976 KB Output is correct
44 Correct 1 ms 976 KB Output is correct
45 Correct 1 ms 1044 KB Output is correct
46 Correct 1 ms 976 KB Output is correct
47 Correct 1 ms 976 KB Output is correct
48 Correct 2 ms 976 KB Output is correct
49 Correct 1 ms 976 KB Output is correct
50 Correct 1 ms 976 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 976 KB Output is correct
2 Correct 1 ms 976 KB Output is correct
3 Correct 1 ms 1060 KB Output is correct
4 Correct 1 ms 976 KB Output is correct
5 Correct 1 ms 1056 KB Output is correct
6 Correct 1 ms 1060 KB Output is correct
7 Correct 1 ms 1060 KB Output is correct
8 Correct 1 ms 1056 KB Output is correct
9 Correct 1 ms 976 KB Output is correct
10 Correct 1 ms 976 KB Output is correct
11 Correct 1 ms 976 KB Output is correct
12 Correct 1 ms 976 KB Output is correct
13 Correct 2 ms 976 KB Output is correct
14 Correct 1 ms 976 KB Output is correct
15 Correct 1 ms 976 KB Output is correct
16 Correct 1 ms 976 KB Output is correct
17 Correct 1 ms 976 KB Output is correct
18 Correct 1 ms 976 KB Output is correct
19 Correct 1 ms 976 KB Output is correct
20 Correct 2 ms 976 KB Output is correct
21 Correct 1 ms 976 KB Output is correct
22 Correct 1 ms 976 KB Output is correct
23 Correct 1 ms 976 KB Output is correct
24 Correct 1 ms 976 KB Output is correct
25 Correct 1 ms 976 KB Output is correct
26 Correct 1 ms 976 KB Output is correct
27 Correct 1 ms 976 KB Output is correct
28 Correct 1 ms 976 KB Output is correct
29 Correct 1 ms 976 KB Output is correct
30 Correct 1 ms 996 KB Output is correct
31 Correct 1 ms 976 KB Output is correct
32 Correct 1 ms 976 KB Output is correct
33 Correct 1 ms 1016 KB Output is correct
34 Correct 2 ms 976 KB Output is correct
35 Correct 1 ms 976 KB Output is correct
36 Correct 2 ms 976 KB Output is correct
37 Correct 1 ms 1004 KB Output is correct
38 Correct 1 ms 976 KB Output is correct
39 Correct 1 ms 976 KB Output is correct
40 Correct 1 ms 976 KB Output is correct
41 Correct 1 ms 976 KB Output is correct
42 Correct 1 ms 976 KB Output is correct
43 Correct 1 ms 976 KB Output is correct
44 Correct 2 ms 976 KB Output is correct
45 Correct 1 ms 976 KB Output is correct
46 Correct 2 ms 976 KB Output is correct
47 Correct 1 ms 976 KB Output is correct
48 Correct 2 ms 976 KB Output is correct
49 Correct 1 ms 976 KB Output is correct
50 Correct 1 ms 976 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 976 KB Output is correct
2 Correct 1 ms 976 KB Output is correct
3 Correct 1 ms 1060 KB Output is correct
4 Correct 1 ms 976 KB Output is correct
5 Correct 1 ms 1056 KB Output is correct
6 Correct 1 ms 1060 KB Output is correct
7 Correct 1 ms 1060 KB Output is correct
8 Correct 1 ms 1056 KB Output is correct
9 Correct 1 ms 976 KB Output is correct
10 Correct 1 ms 976 KB Output is correct
11 Correct 1 ms 976 KB Output is correct
12 Correct 1 ms 976 KB Output is correct
13 Correct 2 ms 976 KB Output is correct
14 Correct 1 ms 976 KB Output is correct
15 Correct 1 ms 976 KB Output is correct
16 Correct 1 ms 976 KB Output is correct
17 Correct 1 ms 976 KB Output is correct
18 Correct 1 ms 976 KB Output is correct
19 Correct 1 ms 976 KB Output is correct
20 Correct 2 ms 976 KB Output is correct
21 Correct 1 ms 976 KB Output is correct
22 Correct 1 ms 976 KB Output is correct
23 Correct 1 ms 976 KB Output is correct
24 Correct 1 ms 976 KB Output is correct
25 Correct 1 ms 976 KB Output is correct
26 Correct 1 ms 976 KB Output is correct
27 Correct 1 ms 976 KB Output is correct
28 Correct 1 ms 976 KB Output is correct
29 Correct 1 ms 976 KB Output is correct
30 Correct 2 ms 976 KB Output is correct
31 Correct 2 ms 976 KB Output is correct
32 Correct 1 ms 976 KB Output is correct
33 Correct 1 ms 976 KB Output is correct
34 Correct 1 ms 976 KB Output is correct
35 Correct 1 ms 976 KB Output is correct
36 Correct 1 ms 976 KB Output is correct
37 Correct 1 ms 976 KB Output is correct
38 Correct 1 ms 976 KB Output is correct
39 Correct 1 ms 976 KB Output is correct
40 Correct 1 ms 976 KB Output is correct
41 Correct 1 ms 976 KB Output is correct
42 Correct 1 ms 1064 KB Output is correct
43 Correct 1 ms 976 KB Output is correct
44 Correct 1 ms 976 KB Output is correct
45 Correct 1 ms 1044 KB Output is correct
46 Correct 1 ms 976 KB Output is correct
47 Correct 1 ms 976 KB Output is correct
48 Correct 2 ms 976 KB Output is correct
49 Correct 1 ms 976 KB Output is correct
50 Correct 1 ms 976 KB Output is correct
51 Correct 1 ms 976 KB Output is correct
52 Correct 1 ms 976 KB Output is correct
53 Correct 1 ms 976 KB Output is correct
54 Correct 1 ms 976 KB Output is correct
55 Correct 1 ms 996 KB Output is correct
56 Correct 1 ms 976 KB Output is correct
57 Correct 1 ms 976 KB Output is correct
58 Correct 1 ms 1016 KB Output is correct
59 Correct 2 ms 976 KB Output is correct
60 Correct 1 ms 976 KB Output is correct
61 Correct 2 ms 976 KB Output is correct
62 Correct 1 ms 1004 KB Output is correct
63 Correct 1 ms 976 KB Output is correct
64 Correct 1 ms 976 KB Output is correct
65 Correct 1 ms 976 KB Output is correct
66 Correct 1 ms 976 KB Output is correct
67 Correct 1 ms 976 KB Output is correct
68 Correct 1 ms 976 KB Output is correct
69 Correct 2 ms 976 KB Output is correct
70 Correct 1 ms 976 KB Output is correct
71 Correct 2 ms 976 KB Output is correct
72 Correct 1 ms 976 KB Output is correct
73 Correct 2 ms 976 KB Output is correct
74 Correct 1 ms 976 KB Output is correct
75 Correct 1 ms 976 KB Output is correct
76 Correct 1 ms 208 KB Output is correct
77 Correct 1 ms 208 KB Output is correct
78 Correct 1 ms 208 KB Output is correct
79 Correct 1 ms 208 KB Output is correct
80 Correct 0 ms 208 KB Output is correct
81 Correct 0 ms 208 KB Output is correct
82 Correct 1 ms 208 KB Output is correct
83 Correct 1 ms 208 KB Output is correct
84 Correct 1 ms 464 KB Output is correct
85 Correct 1 ms 464 KB Output is correct
86 Correct 1 ms 464 KB Output is correct
87 Correct 1 ms 464 KB Output is correct
88 Correct 1 ms 464 KB Output is correct
89 Correct 1 ms 464 KB Output is correct
90 Correct 1 ms 464 KB Output is correct
91 Correct 1 ms 464 KB Output is correct
92 Correct 1 ms 976 KB Output is correct
93 Correct 1 ms 976 KB Output is correct
94 Correct 1 ms 976 KB Output is correct
95 Correct 1 ms 976 KB Output is correct
96 Correct 1 ms 976 KB Output is correct
97 Correct 1 ms 976 KB Output is correct
98 Correct 1 ms 976 KB Output is correct
99 Correct 1 ms 976 KB Output is correct
100 Correct 1 ms 976 KB Output is correct
101 Correct 1 ms 976 KB Output is correct
102 Correct 1 ms 976 KB Output is correct
103 Correct 1 ms 976 KB Output is correct
104 Correct 1 ms 976 KB Output is correct
105 Correct 1 ms 976 KB Output is correct
106 Correct 1 ms 976 KB Output is correct
107 Correct 1 ms 976 KB Output is correct
108 Correct 1 ms 976 KB Output is correct
109 Correct 1 ms 976 KB Output is correct
110 Correct 2 ms 976 KB Output is correct
111 Correct 2 ms 976 KB Output is correct
112 Correct 1 ms 976 KB Output is correct
113 Correct 1 ms 976 KB Output is correct
114 Correct 1 ms 976 KB Output is correct
115 Correct 1 ms 976 KB Output is correct
116 Correct 1 ms 976 KB Output is correct
117 Correct 1 ms 976 KB Output is correct
118 Correct 1 ms 976 KB Output is correct
119 Correct 1 ms 976 KB Output is correct
120 Correct 1 ms 976 KB Output is correct
121 Correct 1 ms 976 KB Output is correct
122 Correct 2 ms 976 KB Output is correct
123 Correct 1 ms 1004 KB Output is correct
124 Correct 1 ms 976 KB Output is correct
125 Correct 1 ms 976 KB Output is correct
126 Correct 1 ms 976 KB Output is correct
127 Correct 2 ms 976 KB Output is correct
128 Correct 1 ms 976 KB Output is correct
129 Correct 1 ms 976 KB Output is correct
130 Correct 2 ms 976 KB Output is correct
131 Correct 1 ms 976 KB Output is correct
132 Correct 1 ms 976 KB Output is correct
133 Correct 1 ms 976 KB Output is correct
134 Correct 1 ms 976 KB Output is correct
135 Correct 2 ms 976 KB Output is correct