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#379184#8566. Can We Still Qualify For Semifinals?ucup-team1198#AC ✓1ms3816kbC++203.7kb2024-04-06 16:31:232024-04-06 16:31:23

Judging History

你现在查看的是最新测评结果

  • [2024-04-06 16:31:23]
  • 评测
  • 测评结果:AC
  • 用时:1ms
  • 内存:3816kb
  • [2024-04-06 16:31:23]
  • 提交

answer

#include <map>
#include <set>
#include <array>
#include <cmath>
#include <deque>
#include <bitset>
#include <random>
#include <string>
#include <vector>
#include <cassert>
#include <complex>
#include <iomanip>
#include <iostream>
#include <algorithm>
#include <unordered_map>
#include <unordered_set>

using namespace std;

const int MAXN = 100;

vector<int> G[MAXN];
int couple[MAXN];
int used[MAXN];

bool khun(int v, int c) {
    if (used[v] == c)
        return false;
    used[v] = c;
    for (int u : G[v]) {
        if (couple[u] == -1) {
            couple[u] = v;
            return true;
        }
    }
    for (int u : G[v]) {
        if (khun(couple[u], c)) {
            couple[u] = v;
            return true;
        }
    }
    return false;
}

void solve() {
    int k;
    cin >> k;
    string s;
    cin >> s;
    vector<pair<int, int>> games;
    vector<int> cur(10);
    iota(cur.begin(), cur.end(), 0);
    for (int i = 0; i < 9; ++i) {
        for (int j = 0; j < 5; ++j)
            games.emplace_back(cur[j], cur[9 - j]);
        rotate(cur.begin() + 1, cur.begin() + 9, cur.end());
    }
    vector<int> cur_cnt(10);
    for (int i = 0; i < k; ++i) {
        if (s[i] == '1')
            ++cur_cnt[games[i].first];
        else
            ++cur_cnt[games[i].second];
    }
    vector<int> mx_cnt(10);
    for (int i = k; i < 45; ++i) {
        if (games[i].first == 0 || games[i].second == 0) {
            ++cur_cnt[0];
        } else {
            ++mx_cnt[games[i].first];
            ++mx_cnt[games[i].second];
        }
    }
    vector<int> cur_mx_cnt(10);
    for (int a = 1; a < 10; ++a) {
        for (int b = a + 1; b < 10; ++b) {
            for (int c = b + 1; c < 10; ++c) {
                bool ok = true;
                for (int i = 0; i < 10; ++i)
                    cur_mx_cnt[i] = mx_cnt[i];
                for (int i = 0; i < 10; ++i) {
                    if (i != a && i != b && i != c) {
                        cur_mx_cnt[i] = min(cur_mx_cnt[i], cur_cnt[0] - cur_cnt[i]);
                        if (cur_mx_cnt[i] < 0)
                            ok = false;
                    }
                }
                if (!ok)
                    continue;
                for (int i = 1; i < 10; ++i)
                    cur_mx_cnt[i] += cur_mx_cnt[i - 1];
                int left_side = 0;
                int right_side = cur_mx_cnt.back();
                for (int i = k; i < 45; ++i) {
                    auto [x, y] = games[i];
                    if (x == 0 || y == 0) {
                        ;
                    } else {
                        for (int j = cur_mx_cnt[x - 1]; j < cur_mx_cnt[x]; ++j)
                            G[left_side].emplace_back(j);
                        for (int j = cur_mx_cnt[y - 1]; j < cur_mx_cnt[y]; ++j)
                            G[left_side].emplace_back(j);
                        ++left_side;
                    }
                }
                fill(used, used + left_side, -1);
                fill(couple, couple + right_side, -1);
                for (int i = 0; i < left_side; ++i) {
                    if (!khun(i, i)) {
                        ok = false;
                        break;
                    }
                }
                for (int i = 0; i < left_side; ++i) {
                    G[i].clear();
                }
                if (ok) {
                    cout << "YES\n";
                    return;
                }
            }
        }
    }
    cout << "NO\n";
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    
    int t;
    cin >> t;
    while (t--) {
        solve();
    }
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3492kb

input:

3
3
111
25
1000010101111111111010100
35
01111011110111101111011110111101111

output:

YES
YES
NO

result:

ok 3 token(s): yes count is 2, no count is 1

Test #2:

score: 0
Accepted
time: 0ms
memory: 3756kb

input:

10
16
0110000001010100
17
01111000110110101
15
001100010101111
16
0010101010011100
19
0000000100010110100
16
0011101010011100
18
011110010001100000
18
000110101001100011
20
01100010000100100100
15
001000111001101

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
YES

result:

ok 10 token(s): yes count is 10, no count is 0

Test #3:

score: 0
Accepted
time: 0ms
memory: 3708kb

input:

10
37
0110000001010100011101001011100110001
39
000100111101101001100101101000000000100
35
00111000100111100101011010111100100
33
010000010001110010110001101110001
30
000100010100000010010110101010
31
0000101000011010101001010000000
44
00001000000111101011010110000101100011000100
42
01111011110001001...

output:

NO
NO
NO
NO
NO
NO
NO
NO
NO
NO

result:

ok 10 token(s): yes count is 0, no count is 10

Test #4:

score: 0
Accepted
time: 0ms
memory: 3596kb

input:

10
23
01100000010101000111010
38
01111001100011000101011110101001101001
27
010000000001001001110001001
26
01101001110011101101000110
8
00001000
22
0110100110001110110001
9
000100010
24
000000100101101010100100
6
011000
29
01101010100101000000000000100

output:

YES
NO
NO
NO
YES
YES
YES
YES
YES
NO

result:

ok 10 token(s): yes count is 6, no count is 4

Test #5:

score: 0
Accepted
time: 0ms
memory: 3596kb

input:

10
30
011000000101010001110100101110
29
01001010010011101110010110010
28
0110000000001000101101001001
23
01101001110011101101000
23
01000001000111001011000
24
011110001000010001010000
23
01001011010101001000011
30
000110011001010010000000000010
24
000110111001110011000011
28
000110001000011011110110...

output:

NO
NO
NO
YES
YES
YES
YES
NO
YES
NO

result:

ok 10 token(s): yes count is 5, no count is 5

Test #6:

score: 0
Accepted
time: 0ms
memory: 3756kb

input:

10
21
011000000101010001110
21
000110110101001010010
22
0111101101001100101101
24
000000001000101011000101
21
011010011100111011010
20
00110000010001101010
21
010010111100010000100
24
010100000100011010110010
23
00001010000110101010010
25
0000000000001000001101110

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
YES

result:

ok 10 token(s): yes count is 10, no count is 0

Test #7:

score: 0
Accepted
time: 0ms
memory: 3816kb

input:

10
26
01100000010101000111010010
26
01101010010100100111011100
26
00110010110100000000010010
27
011100010101110010110101101
30
010100011000001000110101001100
30
011110001000010001010000001001
28
0101100101000010100001101010
26
00101000000000000100000110
28
0110101101010000111000110001
27
00011011110...

output:

NO
NO
NO
NO
NO
NO
NO
NO
NO
NO

result:

ok 10 token(s): yes count is 0, no count is 10

Test #8:

score: 0
Accepted
time: 1ms
memory: 3616kb

input:

10
25
0010100010011010111001111
26
01001010100010101010001010
26
01111001110000100111011110
26
10001000100110101110011110
26
10101010100110101110011110
27
110100010101010011010111001
27
101010101001101011100111101
31
1000010001010100110001011011110
37
1000101111000100110000011000000100101
40
1000101...

output:

NO
NO
NO
NO
NO
NO
NO
NO
NO
NO

result:

ok 10 token(s): yes count is 0, no count is 10

Test #9:

score: 0
Accepted
time: 0ms
memory: 3620kb

input:

10
26
00001010000000000000000000
26
00000010000000000000000000
26
01101010100010101011011110
26
00011011110111101111011110
27
001100110101011001110111101
27
000110111101111011110111101
28
0110001001000010011101111011
29
01000000010001101000011110111
29
01000000010000101101011110111
30
01000011110111...

output:

YES
YES
YES
YES
YES
YES
YES
YES
YES
NO

result:

ok 10 token(s): yes count is 9, no count is 1

Test #10:

score: 0
Accepted
time: 0ms
memory: 3532kb

input:

10
1
0
2
00
10
0001101110
14
00101010000011
20
00000010010100101010
25
0000000101000100100001111
35
01110011010000101010000010010000100
40
0000100110001110101100001001000110000001
44
01011010110010101110011000010001010011100011
45
010010001001010011110111101011011000000100001

output:

YES
YES
YES
YES
YES
YES
NO
NO
NO
NO

result:

ok 10 token(s): yes count is 6, no count is 4

Extra Test:

score: 0
Extra Test Passed