oj.uz

Submission #607678

# Submission time Handle Problem Language Result Execution time Memory
607678 2022-07-27T00:23:03 Z jairRS Cave (IOI13_cave) C++17
100 / 100
 168 ms 592 KB 
#include "cave.h"
#include <bits/stdc++.h>
#define all(s) s.begin(), s.end()
using namespace std;
using vi = vector<int>;

const int MAXN = 5'000;
int switches[MAXN];

// door triggered by switchID
int door[MAXN];

int gN;

// returns N instead of -1 when all doors are open
int getLastDoor()
{
    int lastDoor = tryCombination(switches);
    if (lastDoor == -1)
        lastDoor = gN;
    return lastDoor;
}

void flipSwitches(int i, int j, vi &ids)
{
    for (int k = i; k <= j; k++)
        switches[ids[k]] = !switches[ids[k]];
}

void exploreCave(int N)
{
    gN = N;

    vi unassignedSwitches;
    for (int i = 0; i < N; i++)
        unassignedSwitches.push_back(i);

    // doors up to curDoor EXCEPT curDoor are open
    for (int curDoor = 0; curDoor < N; curDoor++)
    {
        int doorOpen = getLastDoor() > curDoor;

        int respSwitch;
        int lo = 0, hi = unassignedSwitches.size() - 1;
        while (lo < hi)
        {
            int mid = (lo + hi) / 2;
            flipSwitches(lo, mid, unassignedSwitches);

            int lastDoor = getLastDoor();
            bool check = false;
            if (doorOpen)
            {
                if (lastDoor == curDoor)
                    check = true;
            }
            else if (lastDoor > curDoor)
                check = true;

            if (check)
                hi = mid;
            else
                lo = mid + 1;

            flipSwitches(lo, mid, unassignedSwitches);
        }
        respSwitch = unassignedSwitches[lo];
        unassignedSwitches.erase(find(all(unassignedSwitches), respSwitch));
        door[respSwitch] = curDoor;

        if (!doorOpen)
            switches[respSwitch] = !switches[respSwitch];
    }

    answer(switches, door);
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 396 KB Output is correct
2 Correct 102 ms 420 KB Output is correct
3 Correct 161 ms 424 KB Output is correct
4 Correct 107 ms 340 KB Output is correct
5 Correct 165 ms 428 KB Output is correct
6 Correct 155 ms 440 KB Output is correct
7 Correct 159 ms 412 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 149 ms 560 KB Output is correct
13 Correct 149 ms 340 KB Output is correct
14 Correct 153 ms 548 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 164 ms 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 143 ms 428 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 168 ms 420 KB Output is correct
7 Correct 132 ms 436 KB Output is correct
8 Correct 142 ms 444 KB Output is correct
9 Correct 144 ms 340 KB Output is correct
10 Correct 143 ms 432 KB Output is correct
11 Correct 118 ms 444 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 17 ms 372 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 20 ms 384 KB Output is correct
24 Correct 21 ms 312 KB Output is correct
25 Correct 22 ms 340 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 0 ms 308 KB Output is correct
28 Correct 23 ms 592 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 18 ms 340 KB Output is correct
31 Correct 17 ms 340 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 24 ms 340 KB Output is correct
36 Correct 21 ms 340 KB Output is correct
37 Correct 1 ms 212 KB Output is correct

Subtask #5
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 396 KB Output is correct
2 Correct 102 ms 420 KB Output is correct
3 Correct 161 ms 424 KB Output is correct
4 Correct 107 ms 340 KB Output is correct
5 Correct 165 ms 428 KB Output is correct
6 Correct 155 ms 440 KB Output is correct
7 Correct 159 ms 412 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 149 ms 560 KB Output is correct
13 Correct 149 ms 340 KB Output is correct
14 Correct 153 ms 548 KB Output is correct
15 Correct 164 ms 340 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 143 ms 428 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 168 ms 420 KB Output is correct
21 Correct 132 ms 436 KB Output is correct
22 Correct 142 ms 444 KB Output is correct
23 Correct 144 ms 340 KB Output is correct
24 Correct 143 ms 432 KB Output is correct
25 Correct 118 ms 444 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 17 ms 372 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 20 ms 384 KB Output is correct
49 Correct 21 ms 312 KB Output is correct
50 Correct 22 ms 340 KB Output is correct
51 Correct 1 ms 212 KB Output is correct
52 Correct 0 ms 308 KB Output is correct
53 Correct 23 ms 592 KB Output is correct
54 Correct 0 ms 212 KB Output is correct
55 Correct 18 ms 340 KB Output is correct
56 Correct 17 ms 340 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 1 ms 212 KB Output is correct
59 Correct 1 ms 212 KB Output is correct
60 Correct 24 ms 340 KB Output is correct
61 Correct 21 ms 340 KB Output is correct
62 Correct 1 ms 212 KB Output is correct
63 Correct 107 ms 440 KB Output is correct
64 Correct 106 ms 568 KB Output is correct
65 Correct 159 ms 468 KB Output is correct
66 Correct 106 ms 448 KB Output is correct
67 Correct 162 ms 468 KB Output is correct
68 Correct 149 ms 468 KB Output is correct
69 Correct 160 ms 468 KB Output is correct
70 Correct 0 ms 212 KB Output is correct
71 Correct 1 ms 308 KB Output is correct
72 Correct 152 ms 460 KB Output is correct
73 Correct 152 ms 584 KB Output is correct
74 Correct 152 ms 464 KB Output is correct
75 Correct 141 ms 472 KB Output is correct
76 Correct 0 ms 212 KB Output is correct
77 Correct 0 ms 304 KB Output is correct
78 Correct 166 ms 476 KB Output is correct
79 Correct 137 ms 468 KB Output is correct
80 Correct 146 ms 468 KB Output is correct
81 Correct 145 ms 468 KB Output is correct
82 Correct 144 ms 472 KB Output is correct
83 Correct 122 ms 460 KB Output is correct
84 Correct 0 ms 308 KB Output is correct
85 Correct 18 ms 340 KB Output is correct
86 Correct 112 ms 476 KB Output is correct
87 Correct 1 ms 212 KB Output is correct
88 Correct 1 ms 212 KB Output is correct
89 Correct 22 ms 320 KB Output is correct
90 Correct 20 ms 392 KB Output is correct
91 Correct 20 ms 384 KB Output is correct
92 Correct 159 ms 468 KB Output is correct
93 Correct 140 ms 588 KB Output is correct
94 Correct 141 ms 472 KB Output is correct
95 Correct 1 ms 212 KB Output is correct
96 Correct 0 ms 212 KB Output is correct
97 Correct 132 ms 468 KB Output is correct
98 Correct 23 ms 372 KB Output is correct
99 Correct 149 ms 476 KB Output is correct
100 Correct 1 ms 212 KB Output is correct
101 Correct 18 ms 340 KB Output is correct
102 Correct 19 ms 388 KB Output is correct
103 Correct 114 ms 460 KB Output is correct
104 Correct 0 ms 212 KB Output is correct
105 Correct 0 ms 304 KB Output is correct
106 Correct 1 ms 212 KB Output is correct
107 Correct 21 ms 340 KB Output is correct
108 Correct 20 ms 384 KB Output is correct
109 Correct 144 ms 464 KB Output is correct
110 Correct 139 ms 468 KB Output is correct
111 Correct 0 ms 212 KB Output is correct