답안 #699230

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
699230	2023-02-16T07:54:02 Z	maomao90	Joker (BOI20_joker)	C++17	14 / 100	2000 ms	9116 KB

Joker

// Hallelujah, praise the one who set me free
// Hallelujah, death has lost its grip on me
// You have broken every chain, There's salvation in your name
// Jesus Christ, my living hope
#include <bits/stdc++.h> 
using namespace std;

#define REP(i, s, e) for (int i = (s); i < (e); i++)
#define RREP(i, s, e) for (int i = (s); i >= (e); i--)
template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}
typedef long long ll;
typedef long double ld;
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define SZ(_a) (int) _a.size()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
typedef vector<iii> viii;

#ifndef DEBUG
#define cerr if (0) cerr
#endif

const int INF = 1000000005;
const ll LINF = 1000000000000000005ll;
const int MAXN = 200005;

int n, m, q;
int u[MAXN], v[MAXN];
vii ql[MAXN];

int p[MAXN], rnk[MAXN];
bool col[MAXN];
viii undostk;
void init() {
    undostk.clear();
    REP (i, 1, n + 1) {
        p[i] = i;
        rnk[i] = 1;
        col[i] = 0;
    }
}
ii findp(int u) {
    if (p[u] == u) {
        return {u, 0};
    }
    auto [tp, c] = findp(p[u]);
    return {tp, c ^ col[u]};
}
bool join(int a, int b) {
    auto [pa, ca] = findp(a);
    auto [pb, cb] = findp(b);
    if (pa == pb) {
        if (ca == cb) {
            return 0;
        }
        return 1;
    }
    if (rnk[pa] < rnk[pb]) {
        swap(pa, pb);
        swap(a, b);
    }
    bool delta = 0;
    if (rnk[pa] == rnk[pb]) {
        delta = 1;
        rnk[pa]++;
    }
    undostk.pb({pa, pb, delta});
    p[pb] = pa;
    col[pb] = ca == cb;
    return 1;
}
void undo() {
    assert(!undostk.empty());
    auto [pa, pb, delta] = undostk.back(); undostk.pop_back();
    p[pb] = pa;
    col[pb] = 0;
    rnk[pa] -= delta;
}

int main() {
#ifndef DEBUG
    ios::sync_with_stdio(0), cin.tie(0);
#endif
    cin >> n >> m >> q;
    REP (i, 1, m + 1) {
        cin >> u[i] >> v[i];
    }
    REP (i, 0, q) {
        int l, r; cin >> l >> r;
        //ql[l].pb(r);
        init();
        bool pos = 1;
        REP (j, 1, l) {
            if (!join(u[j], v[j])) {
                pos = 0;
                break;
            }
        }
        if (!pos) {
            cout << "YES\n";
            continue;
        }
        REP (j, r + 1, m + 1) {
            if (!join(u[j], v[j])) {
                pos = 0;
                break;
            }
        }
        if (!pos) {
            cout << "YES\n";
            continue;
        }
        cout << "NO\n";
    }
    return 0;
}

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4948 KB	Output is correct
2	Correct	2 ms	4948 KB	Output is correct
3	Correct	2 ms	4948 KB	Output is correct
4	Correct	3 ms	4948 KB	Output is correct
5	Correct	3 ms	4948 KB	Output is correct
6	Correct	3 ms	5076 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	3 ms	4948 KB	Output is correct
9	Correct	3 ms	4948 KB	Output is correct
10	Correct	3 ms	4948 KB	Output is correct
11	Correct	3 ms	4948 KB	Output is correct
12	Correct	3 ms	4948 KB	Output is correct
13	Correct	3 ms	4948 KB	Output is correct
14	Correct	4 ms	4948 KB	Output is correct
15	Correct	3 ms	4948 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	4948 KB	Output is correct
18	Correct	3 ms	4948 KB	Output is correct
19	Correct	3 ms	4948 KB	Output is correct
20	Correct	3 ms	4948 KB	Output is correct
21	Correct	3 ms	4948 KB	Output is correct
22	Correct	3 ms	4948 KB	Output is correct
23	Correct	3 ms	4948 KB	Output is correct
24	Correct	3 ms	4948 KB	Output is correct
25	Correct	3 ms	4948 KB	Output is correct
26	Correct	3 ms	4948 KB	Output is correct
27	Correct	3 ms	4948 KB	Output is correct
28	Correct	3 ms	4948 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4948 KB	Output is correct
2	Correct	2 ms	4948 KB	Output is correct
3	Correct	2 ms	4948 KB	Output is correct
4	Correct	3 ms	4948 KB	Output is correct
5	Correct	3 ms	4948 KB	Output is correct
6	Correct	3 ms	5076 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	3 ms	4948 KB	Output is correct
9	Correct	3 ms	4948 KB	Output is correct
10	Correct	3 ms	4948 KB	Output is correct
11	Correct	3 ms	4948 KB	Output is correct
12	Correct	3 ms	4948 KB	Output is correct
13	Correct	3 ms	4948 KB	Output is correct
14	Correct	4 ms	4948 KB	Output is correct
15	Correct	3 ms	4948 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	4948 KB	Output is correct
18	Correct	3 ms	4948 KB	Output is correct
19	Correct	3 ms	4948 KB	Output is correct
20	Correct	3 ms	4948 KB	Output is correct
21	Correct	3 ms	4948 KB	Output is correct
22	Correct	3 ms	4948 KB	Output is correct
23	Correct	3 ms	4948 KB	Output is correct
24	Correct	3 ms	4948 KB	Output is correct
25	Correct	3 ms	4948 KB	Output is correct
26	Correct	3 ms	4948 KB	Output is correct
27	Correct	3 ms	4948 KB	Output is correct
28	Correct	3 ms	4948 KB	Output is correct
29	Correct	39 ms	5076 KB	Output is correct
30	Correct	35 ms	5076 KB	Output is correct
31	Correct	37 ms	5080 KB	Output is correct
32	Correct	18 ms	5076 KB	Output is correct
33	Correct	12 ms	5076 KB	Output is correct
34	Correct	25 ms	5120 KB	Output is correct
35	Correct	37 ms	5076 KB	Output is correct
36	Correct	26 ms	5076 KB	Output is correct
37	Correct	56 ms	5124 KB	Output is correct
38	Correct	59 ms	5124 KB	Output is correct
39	Correct	35 ms	5124 KB	Output is correct
40	Correct	25 ms	5076 KB	Output is correct
41	Correct	24 ms	5076 KB	Output is correct
42	Correct	24 ms	5092 KB	Output is correct
43	Correct	34 ms	5092 KB	Output is correct
44	Correct	36 ms	5076 KB	Output is correct
45	Correct	34 ms	5084 KB	Output is correct
46	Correct	34 ms	5108 KB	Output is correct
47	Correct	26 ms	5076 KB	Output is correct
48	Correct	29 ms	5076 KB	Output is correct
49	Correct	33 ms	5080 KB	Output is correct
50	Correct	35 ms	5120 KB	Output is correct
51	Correct	28 ms	5088 KB	Output is correct
52	Correct	29 ms	5076 KB	Output is correct
53	Correct	30 ms	5076 KB	Output is correct
54	Correct	37 ms	5116 KB	Output is correct

Subtask #3
0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4948 KB	Output is correct
2	Correct	2 ms	4948 KB	Output is correct
3	Execution timed out	2098 ms	9116 KB	Time limit exceeded
4	Halted	0 ms	0 KB	-

Subtask #4
0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4948 KB	Output is correct
2	Correct	2 ms	4948 KB	Output is correct
3	Correct	2 ms	4948 KB	Output is correct
4	Correct	3 ms	4948 KB	Output is correct
5	Correct	3 ms	4948 KB	Output is correct
6	Correct	3 ms	5076 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	3 ms	4948 KB	Output is correct
9	Correct	3 ms	4948 KB	Output is correct
10	Correct	3 ms	4948 KB	Output is correct
11	Correct	3 ms	4948 KB	Output is correct
12	Correct	3 ms	4948 KB	Output is correct
13	Correct	3 ms	4948 KB	Output is correct
14	Correct	4 ms	4948 KB	Output is correct
15	Correct	3 ms	4948 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	4948 KB	Output is correct
18	Correct	3 ms	4948 KB	Output is correct
19	Correct	3 ms	4948 KB	Output is correct
20	Correct	3 ms	4948 KB	Output is correct
21	Correct	3 ms	4948 KB	Output is correct
22	Correct	3 ms	4948 KB	Output is correct
23	Correct	3 ms	4948 KB	Output is correct
24	Correct	3 ms	4948 KB	Output is correct
25	Correct	3 ms	4948 KB	Output is correct
26	Correct	3 ms	4948 KB	Output is correct
27	Correct	3 ms	4948 KB	Output is correct
28	Correct	3 ms	4948 KB	Output is correct
29	Execution timed out	2098 ms	9116 KB	Time limit exceeded
30	Halted	0 ms	0 KB	-

Subtask #5
0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4948 KB	Output is correct
2	Correct	2 ms	4948 KB	Output is correct
3	Correct	2 ms	4948 KB	Output is correct
4	Correct	3 ms	4948 KB	Output is correct
5	Correct	3 ms	4948 KB	Output is correct
6	Correct	3 ms	5076 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	3 ms	4948 KB	Output is correct
9	Correct	3 ms	4948 KB	Output is correct
10	Correct	3 ms	4948 KB	Output is correct
11	Correct	3 ms	4948 KB	Output is correct
12	Correct	3 ms	4948 KB	Output is correct
13	Correct	3 ms	4948 KB	Output is correct
14	Correct	4 ms	4948 KB	Output is correct
15	Correct	3 ms	4948 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	4948 KB	Output is correct
18	Correct	3 ms	4948 KB	Output is correct
19	Correct	3 ms	4948 KB	Output is correct
20	Correct	3 ms	4948 KB	Output is correct
21	Correct	3 ms	4948 KB	Output is correct
22	Correct	3 ms	4948 KB	Output is correct
23	Correct	3 ms	4948 KB	Output is correct
24	Correct	3 ms	4948 KB	Output is correct
25	Correct	3 ms	4948 KB	Output is correct
26	Correct	3 ms	4948 KB	Output is correct
27	Correct	3 ms	4948 KB	Output is correct
28	Correct	3 ms	4948 KB	Output is correct
29	Correct	39 ms	5076 KB	Output is correct
30	Correct	35 ms	5076 KB	Output is correct
31	Correct	37 ms	5080 KB	Output is correct
32	Correct	18 ms	5076 KB	Output is correct
33	Correct	12 ms	5076 KB	Output is correct
34	Correct	25 ms	5120 KB	Output is correct
35	Correct	37 ms	5076 KB	Output is correct
36	Correct	26 ms	5076 KB	Output is correct
37	Correct	56 ms	5124 KB	Output is correct
38	Correct	59 ms	5124 KB	Output is correct
39	Correct	35 ms	5124 KB	Output is correct
40	Correct	25 ms	5076 KB	Output is correct
41	Correct	24 ms	5076 KB	Output is correct
42	Correct	24 ms	5092 KB	Output is correct
43	Correct	34 ms	5092 KB	Output is correct
44	Correct	36 ms	5076 KB	Output is correct
45	Correct	34 ms	5084 KB	Output is correct
46	Correct	34 ms	5108 KB	Output is correct
47	Correct	26 ms	5076 KB	Output is correct
48	Correct	29 ms	5076 KB	Output is correct
49	Correct	33 ms	5080 KB	Output is correct
50	Correct	35 ms	5120 KB	Output is correct
51	Correct	28 ms	5088 KB	Output is correct
52	Correct	29 ms	5076 KB	Output is correct
53	Correct	30 ms	5076 KB	Output is correct
54	Correct	37 ms	5116 KB	Output is correct
55	Execution timed out	2089 ms	9068 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Subtask #6
0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4948 KB	Output is correct
2	Correct	2 ms	4948 KB	Output is correct
3	Correct	2 ms	4948 KB	Output is correct
4	Correct	3 ms	4948 KB	Output is correct
5	Correct	3 ms	4948 KB	Output is correct
6	Correct	3 ms	5076 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	3 ms	4948 KB	Output is correct
9	Correct	3 ms	4948 KB	Output is correct
10	Correct	3 ms	4948 KB	Output is correct
11	Correct	3 ms	4948 KB	Output is correct
12	Correct	3 ms	4948 KB	Output is correct
13	Correct	3 ms	4948 KB	Output is correct
14	Correct	4 ms	4948 KB	Output is correct
15	Correct	3 ms	4948 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	4948 KB	Output is correct
18	Correct	3 ms	4948 KB	Output is correct
19	Correct	3 ms	4948 KB	Output is correct
20	Correct	3 ms	4948 KB	Output is correct
21	Correct	3 ms	4948 KB	Output is correct
22	Correct	3 ms	4948 KB	Output is correct
23	Correct	3 ms	4948 KB	Output is correct
24	Correct	3 ms	4948 KB	Output is correct
25	Correct	3 ms	4948 KB	Output is correct
26	Correct	3 ms	4948 KB	Output is correct
27	Correct	3 ms	4948 KB	Output is correct
28	Correct	3 ms	4948 KB	Output is correct
29	Correct	39 ms	5076 KB	Output is correct
30	Correct	35 ms	5076 KB	Output is correct
31	Correct	37 ms	5080 KB	Output is correct
32	Correct	18 ms	5076 KB	Output is correct
33	Correct	12 ms	5076 KB	Output is correct
34	Correct	25 ms	5120 KB	Output is correct
35	Correct	37 ms	5076 KB	Output is correct
36	Correct	26 ms	5076 KB	Output is correct
37	Correct	56 ms	5124 KB	Output is correct
38	Correct	59 ms	5124 KB	Output is correct
39	Correct	35 ms	5124 KB	Output is correct
40	Correct	25 ms	5076 KB	Output is correct
41	Correct	24 ms	5076 KB	Output is correct
42	Correct	24 ms	5092 KB	Output is correct
43	Correct	34 ms	5092 KB	Output is correct
44	Correct	36 ms	5076 KB	Output is correct
45	Correct	34 ms	5084 KB	Output is correct
46	Correct	34 ms	5108 KB	Output is correct
47	Correct	26 ms	5076 KB	Output is correct
48	Correct	29 ms	5076 KB	Output is correct
49	Correct	33 ms	5080 KB	Output is correct
50	Correct	35 ms	5120 KB	Output is correct
51	Correct	28 ms	5088 KB	Output is correct
52	Correct	29 ms	5076 KB	Output is correct
53	Correct	30 ms	5076 KB	Output is correct
54	Correct	37 ms	5116 KB	Output is correct
55	Execution timed out	2098 ms	9116 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

답안 #699230

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 8.0 / 8.0

Subtask #3 0 / 25.0

Subtask #4 0 / 10.0

Subtask #5 0 / 22.0

Subtask #6 0 / 29.0

Subtask #1
6.0 / 6.0

Subtask #2
8.0 / 8.0

Subtask #3
0 / 25.0

Subtask #4
0 / 10.0

Subtask #5
0 / 22.0

Subtask #6
0 / 29.0