Submission #441231

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
441231	2021-07-04T17:37:51 Z	ritul_kr_singh	Joker (BOI20_joker)	C++17	100 / 100	1665 ms	237476 KB

Joker

#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	0 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	0 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	332 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	468 KB	Output is correct
37	Correct	14 ms	460 KB	Output is correct
38	Correct	1 ms	460 KB	Output is correct
39	Correct	3 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	4 ms	460 KB	Output is correct
45	Correct	5 ms	476 KB	Output is correct
46	Correct	8 ms	460 KB	Output is correct
47	Correct	4 ms	460 KB	Output is correct
48	Correct	5 ms	460 KB	Output is correct
49	Correct	4 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	5 ms	492 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	1054 ms	123356 KB	Output is correct
4	Correct	252 ms	236484 KB	Output is correct
5	Correct	278 ms	215560 KB	Output is correct
6	Correct	195 ms	123204 KB	Output is correct
7	Correct	206 ms	123252 KB	Output is correct
8	Correct	298 ms	77100 KB	Output is correct
9	Correct	367 ms	123356 KB	Output is correct
10	Correct	803 ms	237416 KB	Output is correct
11	Correct	447 ms	123332 KB	Output is correct
12	Correct	718 ms	215872 KB	Output is correct
13	Correct	200 ms	30656 KB	Output is correct
14	Correct	299 ms	76996 KB	Output is correct
15	Correct	668 ms	169616 KB	Output is correct
16	Correct	794 ms	237240 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	0 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	1054 ms	123356 KB	Output is correct
30	Correct	252 ms	236484 KB	Output is correct
31	Correct	278 ms	215560 KB	Output is correct
32	Correct	195 ms	123204 KB	Output is correct
33	Correct	206 ms	123252 KB	Output is correct
34	Correct	298 ms	77100 KB	Output is correct
35	Correct	367 ms	123356 KB	Output is correct
36	Correct	803 ms	237416 KB	Output is correct
37	Correct	447 ms	123332 KB	Output is correct
38	Correct	718 ms	215872 KB	Output is correct
39	Correct	200 ms	30656 KB	Output is correct
40	Correct	299 ms	76996 KB	Output is correct
41	Correct	668 ms	169616 KB	Output is correct
42	Correct	794 ms	237240 KB	Output is correct
43	Correct	1049 ms	123196 KB	Output is correct
44	Correct	241 ms	236460 KB	Output is correct
45	Correct	591 ms	237416 KB	Output is correct
46	Correct	196 ms	123204 KB	Output is correct
47	Correct	226 ms	123208 KB	Output is correct
48	Correct	449 ms	123332 KB	Output is correct
49	Correct	828 ms	237476 KB	Output is correct
50	Correct	402 ms	100164 KB	Output is correct
51	Correct	578 ms	169464 KB	Output is correct
52	Correct	769 ms	237152 KB	Output is correct
53	Correct	196 ms	30660 KB	Output is correct
54	Correct	444 ms	100084 KB	Output is correct
55	Correct	644 ms	169556 KB	Output is correct
56	Correct	836 ms	237136 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	0 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	332 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	468 KB	Output is correct
37	Correct	14 ms	460 KB	Output is correct
38	Correct	1 ms	460 KB	Output is correct
39	Correct	3 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	4 ms	460 KB	Output is correct
45	Correct	5 ms	476 KB	Output is correct
46	Correct	8 ms	460 KB	Output is correct
47	Correct	4 ms	460 KB	Output is correct
48	Correct	5 ms	460 KB	Output is correct
49	Correct	4 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	5 ms	492 KB	Output is correct
55	Correct	305 ms	120840 KB	Output is correct
56	Correct	194 ms	234436 KB	Output is correct
57	Correct	185 ms	213156 KB	Output is correct
58	Correct	129 ms	120936 KB	Output is correct
59	Correct	204 ms	121024 KB	Output is correct
60	Correct	372 ms	190660 KB	Output is correct
61	Correct	225 ms	120804 KB	Output is correct
62	Correct	398 ms	213620 KB	Output is correct
63	Correct	102 ms	51400 KB	Output is correct
64	Correct	253 ms	144028 KB	Output is correct
65	Correct	411 ms	213572 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	0 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	332 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	468 KB	Output is correct
37	Correct	14 ms	460 KB	Output is correct
38	Correct	1 ms	460 KB	Output is correct
39	Correct	3 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	4 ms	460 KB	Output is correct
45	Correct	5 ms	476 KB	Output is correct
46	Correct	8 ms	460 KB	Output is correct
47	Correct	4 ms	460 KB	Output is correct
48	Correct	5 ms	460 KB	Output is correct
49	Correct	4 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	5 ms	492 KB	Output is correct
55	Correct	1054 ms	123356 KB	Output is correct
56	Correct	252 ms	236484 KB	Output is correct
57	Correct	278 ms	215560 KB	Output is correct
58	Correct	195 ms	123204 KB	Output is correct
59	Correct	206 ms	123252 KB	Output is correct
60	Correct	298 ms	77100 KB	Output is correct
61	Correct	367 ms	123356 KB	Output is correct
62	Correct	803 ms	237416 KB	Output is correct
63	Correct	447 ms	123332 KB	Output is correct
64	Correct	718 ms	215872 KB	Output is correct
65	Correct	200 ms	30656 KB	Output is correct
66	Correct	299 ms	76996 KB	Output is correct
67	Correct	668 ms	169616 KB	Output is correct
68	Correct	794 ms	237240 KB	Output is correct
69	Correct	1049 ms	123196 KB	Output is correct
70	Correct	241 ms	236460 KB	Output is correct
71	Correct	591 ms	237416 KB	Output is correct
72	Correct	196 ms	123204 KB	Output is correct
73	Correct	226 ms	123208 KB	Output is correct
74	Correct	449 ms	123332 KB	Output is correct
75	Correct	828 ms	237476 KB	Output is correct
76	Correct	402 ms	100164 KB	Output is correct
77	Correct	578 ms	169464 KB	Output is correct
78	Correct	769 ms	237152 KB	Output is correct
79	Correct	196 ms	30660 KB	Output is correct
80	Correct	444 ms	100084 KB	Output is correct
81	Correct	644 ms	169556 KB	Output is correct
82	Correct	836 ms	237136 KB	Output is correct
83	Correct	305 ms	120840 KB	Output is correct
84	Correct	194 ms	234436 KB	Output is correct
85	Correct	185 ms	213156 KB	Output is correct
86	Correct	129 ms	120936 KB	Output is correct
87	Correct	204 ms	121024 KB	Output is correct
88	Correct	372 ms	190660 KB	Output is correct
89	Correct	225 ms	120804 KB	Output is correct
90	Correct	398 ms	213620 KB	Output is correct
91	Correct	102 ms	51400 KB	Output is correct
92	Correct	253 ms	144028 KB	Output is correct
93	Correct	411 ms	213572 KB	Output is correct
94	Correct	856 ms	123420 KB	Output is correct
95	Correct	1665 ms	237188 KB	Output is correct
96	Correct	400 ms	215564 KB	Output is correct
97	Correct	209 ms	123424 KB	Output is correct
98	Correct	242 ms	123352 KB	Output is correct
99	Correct	745 ms	77228 KB	Output is correct
100	Correct	1138 ms	237388 KB	Output is correct
101	Correct	540 ms	100480 KB	Output is correct
102	Correct	778 ms	169620 KB	Output is correct
103	Correct	1012 ms	237236 KB	Output is correct
104	Correct	412 ms	53904 KB	Output is correct
105	Correct	799 ms	146540 KB	Output is correct
106	Correct	1031 ms	215996 KB	Output is correct
107	Correct	255 ms	235768 KB	Output is correct
108	Correct	1397 ms	122968 KB	Output is correct
109	Correct	1453 ms	122880 KB	Output is correct
110	Correct	1458 ms	122912 KB	Output is correct
111	Correct	1459 ms	123020 KB	Output is correct
112	Correct	1470 ms	122776 KB	Output is correct
113	Correct	1486 ms	122840 KB	Output is correct
114	Correct	1466 ms	122980 KB	Output is correct
115	Correct	1463 ms	122924 KB	Output is correct
116	Correct	1464 ms	122904 KB	Output is correct

Submission #441231

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