Submission #441230

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
441230	2021-07-04T17:36:23 Z	ritul_kr_singh	Joker (BOI20_joker)	C++17	100 / 100	1611 ms	242392 KB

Joker

#pragma GCC optimize("Ofast,unroll-loops")
 
#include <bits/stdc++.h>
using namespace std;
// #define int long long
 
const int MAXN = 2e5, B = 850, NUM = MAXN / B + 2;
 
int a[NUM][MAXN];
bool p[NUM][MAXN], b[NUM];
int rollback[4][B+1];
int n, m, q, x[MAXN], y[MAXN], ans[MAXN+1], rP = 0, r, c = 1, L[MAXN], R[MAXN], cnt[MAXN+1];
int last[NUM];
 
void unite(int i){
	bool pS = 0, pT = 0;
	int u = x[i], v = y[i];
	while(a[r][u] >= 0) pS ^= p[r][u], u = a[r][u];
	while(a[r][v] >= 0) pT ^= p[r][v], v = a[r][v];
	if(u == v){
		b[r] = b[r] || (pS == pT);
		return;
	}
	if(a[r][u] > a[r][v]) swap(u, v);
	if(!c){
		rollback[0][rP] = u;
		rollback[1][rP] = v;
		rollback[2][rP] = a[r][v];
		rollback[3][rP] = p[r][v];
		++rP;
	}
	a[r][u] += a[r][v];
	a[r][v] = u;
	p[r][v] = pS ^ pT ^ 1;
}
 
signed main(){
	cin.tie(0)->sync_with_stdio(0);
	cin >> n >> m >> q;
	for(int i=0; i<m; ++i){
		cin >> x[i] >> y[i], --x[i], --y[i];
 
		if(i % B) continue;
		r = i / B;
 
		if(i){
			b[r] = b[r-1];
			for(int j=0; j<n; ++j) a[r][j] = a[r-1][j];
			for(int j=0; j<n; ++j) p[r][j] = p[r-1][j];
			for(int j=i-B; j<i; ++j) unite(j);
		}else fill(a[r], a[r]+n, -1);
	}
	fill(last, last+NUM, m);
	for(int i=0; i<q; ++i){
		cin >> L[i] >> R[i];
		++cnt[R[i]];
	}
 
	int z = ++r;
	b[r] = b[r-1];
	for(int j=0; j<n; ++j) a[r][j] = a[r-1][j];
	for(int j=0; j<n; ++j) p[r][j] = p[r-1][j];
	for(int j=(r-1)*B; j<m; ++j) unite(j);
	if(!b[r]){
		while(q--) cout << "NO\n";
		return 0;
	}
 
	for(int i=m; i; --i){
		if(cnt[i] || i==m){
			c = 1;
			while(z && b[z-1]){
				--z;
				r = z-1;
				while(last[r] > i) unite(--last[r]);
			}
			if(!z) break;
	 
			r = z - 1, c = 0;
			int l = r*B;
			while(!b[r]) unite(l++);
			b[r] = 0, ans[i] = l;
	 
			while(rP){
				--rP;
				a[r][rollback[1][rP]] = rollback[2][rP];
				a[r][rollback[0][rP]] -= rollback[2][rP];
				p[r][rollback[1][rP]] = rollback[3][rP];
			}
		}
		c = 1, r = z-1;
		unite(i-1);
		--last[r];
	}
	for(int i=0; i<q; ++i){
		cout << (ans[R[i]] >= L[i] ? "NO" : "YES") << '\n';
	}
}

Subtask #1
6.0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	0 ms	332 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	0 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct
27	Correct	1 ms	332 KB	Output is correct
28	Correct	1 ms	332 KB	Output is correct

Subtask #2
8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	0 ms	332 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	0 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct
27	Correct	1 ms	332 KB	Output is correct
28	Correct	1 ms	332 KB	Output is correct
29	Correct	1 ms	460 KB	Output is correct
30	Correct	4 ms	460 KB	Output is correct
31	Correct	6 ms	460 KB	Output is correct
32	Correct	4 ms	460 KB	Output is correct
33	Correct	2 ms	460 KB	Output is correct
34	Correct	6 ms	460 KB	Output is correct
35	Correct	6 ms	460 KB	Output is correct
36	Correct	6 ms	464 KB	Output is correct
37	Correct	14 ms	496 KB	Output is correct
38	Correct	1 ms	460 KB	Output is correct
39	Correct	2 ms	460 KB	Output is correct
40	Correct	2 ms	460 KB	Output is correct
41	Correct	2 ms	460 KB	Output is correct
42	Correct	2 ms	460 KB	Output is correct
43	Correct	3 ms	460 KB	Output is correct
44	Correct	5 ms	460 KB	Output is correct
45	Correct	5 ms	460 KB	Output is correct
46	Correct	8 ms	500 KB	Output is correct
47	Correct	3 ms	460 KB	Output is correct
48	Correct	5 ms	460 KB	Output is correct
49	Correct	5 ms	460 KB	Output is correct
50	Correct	5 ms	460 KB	Output is correct
51	Correct	3 ms	460 KB	Output is correct
52	Correct	4 ms	460 KB	Output is correct
53	Correct	5 ms	460 KB	Output is correct
54	Correct	6 ms	496 KB	Output is correct

Subtask #3
25.0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1045 ms	123284 KB	Output is correct
4	Correct	210 ms	236472 KB	Output is correct
5	Correct	246 ms	215568 KB	Output is correct
6	Correct	172 ms	123204 KB	Output is correct
7	Correct	190 ms	123284 KB	Output is correct
8	Correct	290 ms	77124 KB	Output is correct
9	Correct	355 ms	123360 KB	Output is correct
10	Correct	775 ms	237212 KB	Output is correct
11	Correct	436 ms	123204 KB	Output is correct
12	Correct	701 ms	215916 KB	Output is correct
13	Correct	199 ms	30788 KB	Output is correct
14	Correct	300 ms	76988 KB	Output is correct
15	Correct	650 ms	169544 KB	Output is correct
16	Correct	767 ms	237036 KB	Output is correct

Subtask #4
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	0 ms	332 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	0 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct
27	Correct	1 ms	332 KB	Output is correct
28	Correct	1 ms	332 KB	Output is correct
29	Correct	1045 ms	123284 KB	Output is correct
30	Correct	210 ms	236472 KB	Output is correct
31	Correct	246 ms	215568 KB	Output is correct
32	Correct	172 ms	123204 KB	Output is correct
33	Correct	190 ms	123284 KB	Output is correct
34	Correct	290 ms	77124 KB	Output is correct
35	Correct	355 ms	123360 KB	Output is correct
36	Correct	775 ms	237212 KB	Output is correct
37	Correct	436 ms	123204 KB	Output is correct
38	Correct	701 ms	215916 KB	Output is correct
39	Correct	199 ms	30788 KB	Output is correct
40	Correct	300 ms	76988 KB	Output is correct
41	Correct	650 ms	169544 KB	Output is correct
42	Correct	767 ms	237036 KB	Output is correct
43	Correct	1044 ms	123384 KB	Output is correct
44	Correct	198 ms	236484 KB	Output is correct
45	Correct	565 ms	237480 KB	Output is correct
46	Correct	177 ms	123204 KB	Output is correct
47	Correct	182 ms	123192 KB	Output is correct
48	Correct	439 ms	123440 KB	Output is correct
49	Correct	788 ms	237268 KB	Output is correct
50	Correct	403 ms	100220 KB	Output is correct
51	Correct	557 ms	169540 KB	Output is correct
52	Correct	710 ms	237172 KB	Output is correct
53	Correct	191 ms	30660 KB	Output is correct
54	Correct	426 ms	100176 KB	Output is correct
55	Correct	597 ms	169756 KB	Output is correct
56	Correct	786 ms	237236 KB	Output is correct

Subtask #5
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	0 ms	332 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	0 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct
27	Correct	1 ms	332 KB	Output is correct
28	Correct	1 ms	332 KB	Output is correct
29	Correct	1 ms	460 KB	Output is correct
30	Correct	4 ms	460 KB	Output is correct
31	Correct	6 ms	460 KB	Output is correct
32	Correct	4 ms	460 KB	Output is correct
33	Correct	2 ms	460 KB	Output is correct
34	Correct	6 ms	460 KB	Output is correct
35	Correct	6 ms	460 KB	Output is correct
36	Correct	6 ms	464 KB	Output is correct
37	Correct	14 ms	496 KB	Output is correct
38	Correct	1 ms	460 KB	Output is correct
39	Correct	2 ms	460 KB	Output is correct
40	Correct	2 ms	460 KB	Output is correct
41	Correct	2 ms	460 KB	Output is correct
42	Correct	2 ms	460 KB	Output is correct
43	Correct	3 ms	460 KB	Output is correct
44	Correct	5 ms	460 KB	Output is correct
45	Correct	5 ms	460 KB	Output is correct
46	Correct	8 ms	500 KB	Output is correct
47	Correct	3 ms	460 KB	Output is correct
48	Correct	5 ms	460 KB	Output is correct
49	Correct	5 ms	460 KB	Output is correct
50	Correct	5 ms	460 KB	Output is correct
51	Correct	3 ms	460 KB	Output is correct
52	Correct	4 ms	460 KB	Output is correct
53	Correct	5 ms	460 KB	Output is correct
54	Correct	6 ms	496 KB	Output is correct
55	Correct	283 ms	120832 KB	Output is correct
56	Correct	154 ms	234376 KB	Output is correct
57	Correct	151 ms	213184 KB	Output is correct
58	Correct	110 ms	120828 KB	Output is correct
59	Correct	204 ms	121072 KB	Output is correct
60	Correct	340 ms	190692 KB	Output is correct
61	Correct	208 ms	120876 KB	Output is correct
62	Correct	366 ms	213444 KB	Output is correct
63	Correct	94 ms	51500 KB	Output is correct
64	Correct	230 ms	144060 KB	Output is correct
65	Correct	376 ms	213392 KB	Output is correct

Subtask #6
29.0 / 29.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	0 ms	332 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	0 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct
27	Correct	1 ms	332 KB	Output is correct
28	Correct	1 ms	332 KB	Output is correct
29	Correct	1 ms	460 KB	Output is correct
30	Correct	4 ms	460 KB	Output is correct
31	Correct	6 ms	460 KB	Output is correct
32	Correct	4 ms	460 KB	Output is correct
33	Correct	2 ms	460 KB	Output is correct
34	Correct	6 ms	460 KB	Output is correct
35	Correct	6 ms	460 KB	Output is correct
36	Correct	6 ms	464 KB	Output is correct
37	Correct	14 ms	496 KB	Output is correct
38	Correct	1 ms	460 KB	Output is correct
39	Correct	2 ms	460 KB	Output is correct
40	Correct	2 ms	460 KB	Output is correct
41	Correct	2 ms	460 KB	Output is correct
42	Correct	2 ms	460 KB	Output is correct
43	Correct	3 ms	460 KB	Output is correct
44	Correct	5 ms	460 KB	Output is correct
45	Correct	5 ms	460 KB	Output is correct
46	Correct	8 ms	500 KB	Output is correct
47	Correct	3 ms	460 KB	Output is correct
48	Correct	5 ms	460 KB	Output is correct
49	Correct	5 ms	460 KB	Output is correct
50	Correct	5 ms	460 KB	Output is correct
51	Correct	3 ms	460 KB	Output is correct
52	Correct	4 ms	460 KB	Output is correct
53	Correct	5 ms	460 KB	Output is correct
54	Correct	6 ms	496 KB	Output is correct
55	Correct	1045 ms	123284 KB	Output is correct
56	Correct	210 ms	236472 KB	Output is correct
57	Correct	246 ms	215568 KB	Output is correct
58	Correct	172 ms	123204 KB	Output is correct
59	Correct	190 ms	123284 KB	Output is correct
60	Correct	290 ms	77124 KB	Output is correct
61	Correct	355 ms	123360 KB	Output is correct
62	Correct	775 ms	237212 KB	Output is correct
63	Correct	436 ms	123204 KB	Output is correct
64	Correct	701 ms	215916 KB	Output is correct
65	Correct	199 ms	30788 KB	Output is correct
66	Correct	300 ms	76988 KB	Output is correct
67	Correct	650 ms	169544 KB	Output is correct
68	Correct	767 ms	237036 KB	Output is correct
69	Correct	1044 ms	123384 KB	Output is correct
70	Correct	198 ms	236484 KB	Output is correct
71	Correct	565 ms	237480 KB	Output is correct
72	Correct	177 ms	123204 KB	Output is correct
73	Correct	182 ms	123192 KB	Output is correct
74	Correct	439 ms	123440 KB	Output is correct
75	Correct	788 ms	237268 KB	Output is correct
76	Correct	403 ms	100220 KB	Output is correct
77	Correct	557 ms	169540 KB	Output is correct
78	Correct	710 ms	237172 KB	Output is correct
79	Correct	191 ms	30660 KB	Output is correct
80	Correct	426 ms	100176 KB	Output is correct
81	Correct	597 ms	169756 KB	Output is correct
82	Correct	786 ms	237236 KB	Output is correct
83	Correct	283 ms	120832 KB	Output is correct
84	Correct	154 ms	234376 KB	Output is correct
85	Correct	151 ms	213184 KB	Output is correct
86	Correct	110 ms	120828 KB	Output is correct
87	Correct	204 ms	121072 KB	Output is correct
88	Correct	340 ms	190692 KB	Output is correct
89	Correct	208 ms	120876 KB	Output is correct
90	Correct	366 ms	213444 KB	Output is correct
91	Correct	94 ms	51500 KB	Output is correct
92	Correct	230 ms	144060 KB	Output is correct
93	Correct	376 ms	213392 KB	Output is correct
94	Correct	843 ms	123276 KB	Output is correct
95	Correct	1611 ms	237040 KB	Output is correct
96	Correct	376 ms	220592 KB	Output is correct
97	Correct	190 ms	128260 KB	Output is correct
98	Correct	229 ms	128324 KB	Output is correct
99	Correct	762 ms	81996 KB	Output is correct
100	Correct	1133 ms	242392 KB	Output is correct
101	Correct	535 ms	105264 KB	Output is correct
102	Correct	761 ms	174652 KB	Output is correct
103	Correct	1018 ms	242380 KB	Output is correct
104	Correct	423 ms	58776 KB	Output is correct
105	Correct	815 ms	151464 KB	Output is correct
106	Correct	1010 ms	221072 KB	Output is correct
107	Correct	210 ms	241092 KB	Output is correct
108	Correct	1397 ms	127684 KB	Output is correct
109	Correct	1441 ms	127760 KB	Output is correct
110	Correct	1459 ms	127800 KB	Output is correct
111	Correct	1445 ms	127648 KB	Output is correct
112	Correct	1445 ms	127604 KB	Output is correct
113	Correct	1457 ms	127752 KB	Output is correct
114	Correct	1455 ms	127884 KB	Output is correct
115	Correct	1465 ms	127680 KB	Output is correct
116	Correct	1463 ms	127924 KB	Output is correct

Submission #441230

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 8.0 / 8.0

Subtask #3 25.0 / 25.0

Subtask #4 10.0 / 10.0

Subtask #5 22.0 / 22.0

Subtask #6 29.0 / 29.0

Subtask #1
6.0 / 6.0

Subtask #2
8.0 / 8.0

Subtask #3
25.0 / 25.0

Subtask #4
10.0 / 10.0

Subtask #5
22.0 / 22.0

Subtask #6
29.0 / 29.0