답안 #362946

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
362946	2021-02-04T19:25:54 Z	songc	Joker (BOI20_joker)	C++14	100 / 100	308 ms	16584 KB

Joker

#include <bits/stdc++.h>
#define pb push_back
#define fi first
#define se second
#define Mup(a,x) a=max(a, x)
#define mup(a,x) a=min(a, x)
#define all(v) v.begin(),v.end()
#define lb lower_bound
#define INF (1ll<<60)
#define MOD 1'000'000'007 
using namespace std;
typedef long long LL;
typedef pair<int,int> pii;

int N, M, Q;
int U[202020], V[202020];
int P[404040], R[202020];
vector<pii> rb;

int rt(int u){
	if (P[u] < 0) return u;
	return rt(P[u]);
}

void uni(int u, int v){
	u = rt(u), v = rt(v);
	if (u == v) return;
	if (P[u] > P[v]) swap(u, v);
	rb.pb(pii(u, P[u]));
	rb.pb(pii(v, P[v]));
	P[u] += P[v], P[v] = u;
}

void undo(){
	pii t = rb.back();
	rb.pop_back();
	P[t.fi] = t.se;
}

void dnc(int s, int e, int r){
	if (s > e) return;
	int m=s+e>>1, rs=(int)rb.size();
	for (int i=max(s,1); i<=m; i++){
		uni(U[i], V[i]+N);
		uni(U[i]+N, V[i]);
		if (rt(U[i]) == rt(U[i]+N)){
			for (int j=m; j<=e; j++) R[j] = r;
			while (rb.size()>rs) undo();
			dnc(s, m-1, r);
			return;
		}
	}
	int rr=(int)rb.size();
	for (int i=r-1; i>s; i--){
		uni(U[i], V[i]+N);
		uni(U[i]+N, V[i]);
		if (rt(U[i]) == rt(U[i]+N)){R[m] = i; break;}
	}
	while (rb.size()>rr) undo();
	dnc(m+1, e, r);
	while (rb.size()>rs) undo();
	for (int i=r-1; i>=max(R[m],s+1); i--){
		uni(U[i], V[i]+N);
		uni(U[i]+N, V[i]);
		if (rt(U[i]) == rt(U[i]+N)){
			for (int j=s; j<m; j++) R[j] = R[m];
			return;
		}
	}
	dnc(s, m-1, R[m]);
}

int main(){
	scanf("%d %d %d", &N, &M, &Q);
	for (int i=1; i<=M; i++) scanf("%d %d", &U[i], &V[i]);
	for (int i=1; i<=2*N; i++) P[i] = -1;
	dnc(0, M-1, M+1);
	while (Q--){
		int l, r;
		scanf("%d %d", &l, &r);
		puts(r<R[l-1]?"YES":"NO");
	}
	return 0;
}

Compilation message

Joker.cpp: In function 'void dnc(int, int, int)':
Joker.cpp:42:9: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   42 |  int m=s+e>>1, rs=(int)rb.size();
      |        ~^~
Joker.cpp:48:20: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   48 |    while (rb.size()>rs) undo();
      |           ~~~~~~~~~^~~
Joker.cpp:59:18: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   59 |  while (rb.size()>rr) undo();
      |         ~~~~~~~~~^~~
Joker.cpp:61:18: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   61 |  while (rb.size()>rs) undo();
      |         ~~~~~~~~~^~~
Joker.cpp: In function 'int main()':
Joker.cpp:74:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   74 |  scanf("%d %d %d", &N, &M, &Q);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Joker.cpp:75:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   75 |  for (int i=1; i<=M; i++) scanf("%d %d", &U[i], &V[i]);
      |                           ~~~~~^~~~~~~~~~~~~~~~~~~~~~~
Joker.cpp:80:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   80 |   scanf("%d %d", &l, &r);
      |   ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	1 ms	364 KB	Output is correct
22	Correct	1 ms	364 KB	Output is correct
23	Correct	1 ms	364 KB	Output is correct
24	Correct	1 ms	364 KB	Output is correct
25	Correct	1 ms	364 KB	Output is correct
26	Correct	1 ms	364 KB	Output is correct
27	Correct	1 ms	364 KB	Output is correct
28	Correct	1 ms	364 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	1 ms	364 KB	Output is correct
22	Correct	1 ms	364 KB	Output is correct
23	Correct	1 ms	364 KB	Output is correct
24	Correct	1 ms	364 KB	Output is correct
25	Correct	1 ms	364 KB	Output is correct
26	Correct	1 ms	364 KB	Output is correct
27	Correct	1 ms	364 KB	Output is correct
28	Correct	1 ms	364 KB	Output is correct
29	Correct	2 ms	492 KB	Output is correct
30	Correct	2 ms	492 KB	Output is correct
31	Correct	2 ms	492 KB	Output is correct
32	Correct	2 ms	492 KB	Output is correct
33	Correct	2 ms	492 KB	Output is correct
34	Correct	2 ms	492 KB	Output is correct
35	Correct	3 ms	492 KB	Output is correct
36	Correct	2 ms	492 KB	Output is correct
37	Correct	3 ms	620 KB	Output is correct
38	Correct	3 ms	492 KB	Output is correct
39	Correct	2 ms	620 KB	Output is correct
40	Correct	2 ms	492 KB	Output is correct
41	Correct	2 ms	492 KB	Output is correct
42	Correct	2 ms	492 KB	Output is correct
43	Correct	2 ms	492 KB	Output is correct
44	Correct	2 ms	492 KB	Output is correct
45	Correct	2 ms	512 KB	Output is correct
46	Correct	3 ms	492 KB	Output is correct
47	Correct	2 ms	492 KB	Output is correct
48	Correct	2 ms	492 KB	Output is correct
49	Correct	3 ms	492 KB	Output is correct
50	Correct	3 ms	492 KB	Output is correct
51	Correct	2 ms	492 KB	Output is correct
52	Correct	2 ms	492 KB	Output is correct
53	Correct	3 ms	492 KB	Output is correct
54	Correct	3 ms	492 KB	Output is correct

Subtask #3
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	263 ms	7764 KB	Output is correct
4	Correct	220 ms	12248 KB	Output is correct
5	Correct	155 ms	12512 KB	Output is correct
6	Correct	160 ms	11476 KB	Output is correct
7	Correct	167 ms	11348 KB	Output is correct
8	Correct	171 ms	9180 KB	Output is correct
9	Correct	209 ms	10484 KB	Output is correct
10	Correct	283 ms	12116 KB	Output is correct
11	Correct	224 ms	10964 KB	Output is correct
12	Correct	243 ms	12372 KB	Output is correct
13	Correct	163 ms	8032 KB	Output is correct
14	Correct	171 ms	9696 KB	Output is correct
15	Correct	277 ms	11604 KB	Output is correct
16	Correct	280 ms	12420 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	1 ms	364 KB	Output is correct
22	Correct	1 ms	364 KB	Output is correct
23	Correct	1 ms	364 KB	Output is correct
24	Correct	1 ms	364 KB	Output is correct
25	Correct	1 ms	364 KB	Output is correct
26	Correct	1 ms	364 KB	Output is correct
27	Correct	1 ms	364 KB	Output is correct
28	Correct	1 ms	364 KB	Output is correct
29	Correct	263 ms	7764 KB	Output is correct
30	Correct	220 ms	12248 KB	Output is correct
31	Correct	155 ms	12512 KB	Output is correct
32	Correct	160 ms	11476 KB	Output is correct
33	Correct	167 ms	11348 KB	Output is correct
34	Correct	171 ms	9180 KB	Output is correct
35	Correct	209 ms	10484 KB	Output is correct
36	Correct	283 ms	12116 KB	Output is correct
37	Correct	224 ms	10964 KB	Output is correct
38	Correct	243 ms	12372 KB	Output is correct
39	Correct	163 ms	8032 KB	Output is correct
40	Correct	171 ms	9696 KB	Output is correct
41	Correct	277 ms	11604 KB	Output is correct
42	Correct	280 ms	12420 KB	Output is correct
43	Correct	267 ms	11732 KB	Output is correct
44	Correct	232 ms	14664 KB	Output is correct
45	Correct	308 ms	15756 KB	Output is correct
46	Correct	150 ms	11732 KB	Output is correct
47	Correct	163 ms	11680 KB	Output is correct
48	Correct	230 ms	10836 KB	Output is correct
49	Correct	293 ms	12500 KB	Output is correct
50	Correct	226 ms	10836 KB	Output is correct
51	Correct	239 ms	12116 KB	Output is correct
52	Correct	261 ms	12884 KB	Output is correct
53	Correct	173 ms	8416 KB	Output is correct
54	Correct	234 ms	10708 KB	Output is correct
55	Correct	266 ms	11988 KB	Output is correct
56	Correct	291 ms	12756 KB	Output is correct

Subtask #5
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	1 ms	364 KB	Output is correct
22	Correct	1 ms	364 KB	Output is correct
23	Correct	1 ms	364 KB	Output is correct
24	Correct	1 ms	364 KB	Output is correct
25	Correct	1 ms	364 KB	Output is correct
26	Correct	1 ms	364 KB	Output is correct
27	Correct	1 ms	364 KB	Output is correct
28	Correct	1 ms	364 KB	Output is correct
29	Correct	2 ms	492 KB	Output is correct
30	Correct	2 ms	492 KB	Output is correct
31	Correct	2 ms	492 KB	Output is correct
32	Correct	2 ms	492 KB	Output is correct
33	Correct	2 ms	492 KB	Output is correct
34	Correct	2 ms	492 KB	Output is correct
35	Correct	3 ms	492 KB	Output is correct
36	Correct	2 ms	492 KB	Output is correct
37	Correct	3 ms	620 KB	Output is correct
38	Correct	3 ms	492 KB	Output is correct
39	Correct	2 ms	620 KB	Output is correct
40	Correct	2 ms	492 KB	Output is correct
41	Correct	2 ms	492 KB	Output is correct
42	Correct	2 ms	492 KB	Output is correct
43	Correct	2 ms	492 KB	Output is correct
44	Correct	2 ms	492 KB	Output is correct
45	Correct	2 ms	512 KB	Output is correct
46	Correct	3 ms	492 KB	Output is correct
47	Correct	2 ms	492 KB	Output is correct
48	Correct	2 ms	492 KB	Output is correct
49	Correct	3 ms	492 KB	Output is correct
50	Correct	3 ms	492 KB	Output is correct
51	Correct	2 ms	492 KB	Output is correct
52	Correct	2 ms	492 KB	Output is correct
53	Correct	3 ms	492 KB	Output is correct
54	Correct	3 ms	492 KB	Output is correct
55	Correct	214 ms	9308 KB	Output is correct
56	Correct	172 ms	14424 KB	Output is correct
57	Correct	99 ms	14168 KB	Output is correct
58	Correct	117 ms	9308 KB	Output is correct
59	Correct	188 ms	9308 KB	Output is correct
60	Correct	252 ms	9948 KB	Output is correct
61	Correct	199 ms	9308 KB	Output is correct
62	Correct	191 ms	10076 KB	Output is correct
63	Correct	115 ms	6624 KB	Output is correct
64	Correct	197 ms	9436 KB	Output is correct
65	Correct	251 ms	10076 KB	Output is correct

Subtask #6
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	364 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	364 KB	Output is correct
12	Correct	1 ms	364 KB	Output is correct
13	Correct	1 ms	364 KB	Output is correct
14	Correct	1 ms	364 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	1 ms	364 KB	Output is correct
17	Correct	1 ms	364 KB	Output is correct
18	Correct	1 ms	364 KB	Output is correct
19	Correct	1 ms	364 KB	Output is correct
20	Correct	1 ms	364 KB	Output is correct
21	Correct	1 ms	364 KB	Output is correct
22	Correct	1 ms	364 KB	Output is correct
23	Correct	1 ms	364 KB	Output is correct
24	Correct	1 ms	364 KB	Output is correct
25	Correct	1 ms	364 KB	Output is correct
26	Correct	1 ms	364 KB	Output is correct
27	Correct	1 ms	364 KB	Output is correct
28	Correct	1 ms	364 KB	Output is correct
29	Correct	2 ms	492 KB	Output is correct
30	Correct	2 ms	492 KB	Output is correct
31	Correct	2 ms	492 KB	Output is correct
32	Correct	2 ms	492 KB	Output is correct
33	Correct	2 ms	492 KB	Output is correct
34	Correct	2 ms	492 KB	Output is correct
35	Correct	3 ms	492 KB	Output is correct
36	Correct	2 ms	492 KB	Output is correct
37	Correct	3 ms	620 KB	Output is correct
38	Correct	3 ms	492 KB	Output is correct
39	Correct	2 ms	620 KB	Output is correct
40	Correct	2 ms	492 KB	Output is correct
41	Correct	2 ms	492 KB	Output is correct
42	Correct	2 ms	492 KB	Output is correct
43	Correct	2 ms	492 KB	Output is correct
44	Correct	2 ms	492 KB	Output is correct
45	Correct	2 ms	512 KB	Output is correct
46	Correct	3 ms	492 KB	Output is correct
47	Correct	2 ms	492 KB	Output is correct
48	Correct	2 ms	492 KB	Output is correct
49	Correct	3 ms	492 KB	Output is correct
50	Correct	3 ms	492 KB	Output is correct
51	Correct	2 ms	492 KB	Output is correct
52	Correct	2 ms	492 KB	Output is correct
53	Correct	3 ms	492 KB	Output is correct
54	Correct	3 ms	492 KB	Output is correct
55	Correct	263 ms	7764 KB	Output is correct
56	Correct	220 ms	12248 KB	Output is correct
57	Correct	155 ms	12512 KB	Output is correct
58	Correct	160 ms	11476 KB	Output is correct
59	Correct	167 ms	11348 KB	Output is correct
60	Correct	171 ms	9180 KB	Output is correct
61	Correct	209 ms	10484 KB	Output is correct
62	Correct	283 ms	12116 KB	Output is correct
63	Correct	224 ms	10964 KB	Output is correct
64	Correct	243 ms	12372 KB	Output is correct
65	Correct	163 ms	8032 KB	Output is correct
66	Correct	171 ms	9696 KB	Output is correct
67	Correct	277 ms	11604 KB	Output is correct
68	Correct	280 ms	12420 KB	Output is correct
69	Correct	267 ms	11732 KB	Output is correct
70	Correct	232 ms	14664 KB	Output is correct
71	Correct	308 ms	15756 KB	Output is correct
72	Correct	150 ms	11732 KB	Output is correct
73	Correct	163 ms	11680 KB	Output is correct
74	Correct	230 ms	10836 KB	Output is correct
75	Correct	293 ms	12500 KB	Output is correct
76	Correct	226 ms	10836 KB	Output is correct
77	Correct	239 ms	12116 KB	Output is correct
78	Correct	261 ms	12884 KB	Output is correct
79	Correct	173 ms	8416 KB	Output is correct
80	Correct	234 ms	10708 KB	Output is correct
81	Correct	266 ms	11988 KB	Output is correct
82	Correct	291 ms	12756 KB	Output is correct
83	Correct	214 ms	9308 KB	Output is correct
84	Correct	172 ms	14424 KB	Output is correct
85	Correct	99 ms	14168 KB	Output is correct
86	Correct	117 ms	9308 KB	Output is correct
87	Correct	188 ms	9308 KB	Output is correct
88	Correct	252 ms	9948 KB	Output is correct
89	Correct	199 ms	9308 KB	Output is correct
90	Correct	191 ms	10076 KB	Output is correct
91	Correct	115 ms	6624 KB	Output is correct
92	Correct	197 ms	9436 KB	Output is correct
93	Correct	251 ms	10076 KB	Output is correct
94	Correct	271 ms	12500 KB	Output is correct
95	Correct	304 ms	16584 KB	Output is correct
96	Correct	161 ms	15688 KB	Output is correct
97	Correct	160 ms	12372 KB	Output is correct
98	Correct	186 ms	12500 KB	Output is correct
99	Correct	197 ms	10716 KB	Output is correct
100	Correct	261 ms	13524 KB	Output is correct
101	Correct	227 ms	11476 KB	Output is correct
102	Correct	262 ms	12756 KB	Output is correct
103	Correct	292 ms	14056 KB	Output is correct
104	Correct	187 ms	9948 KB	Output is correct
105	Correct	257 ms	12372 KB	Output is correct
106	Correct	304 ms	13292 KB	Output is correct
107	Correct	168 ms	16584 KB	Output is correct
108	Correct	269 ms	12208 KB	Output is correct
109	Correct	269 ms	12116 KB	Output is correct
110	Correct	265 ms	12116 KB	Output is correct
111	Correct	267 ms	12244 KB	Output is correct
112	Correct	267 ms	12116 KB	Output is correct
113	Correct	268 ms	12116 KB	Output is correct
114	Correct	268 ms	12288 KB	Output is correct
115	Correct	268 ms	12244 KB	Output is correct
116	Correct	269 ms	12116 KB	Output is correct

답안 #362946

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