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Submission #436980

# Submission time Handle Problem Language Result Execution time Memory
436980 2021-06-25T12:30:40 Z haojiandan Fountain Parks (IOI21_parks) C++17
100 / 100
 951 ms 29040 KB 
#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
#define MP make_pair
const int maxn=(2e5)+10;
map<pair<int,int>,int> M;
int n,m,hd,tl;
bool vis[maxn];
int fx[4][2]={{-2,0},{2,0},{0,-2},{0,2}};
int q[maxn];
int construct_roads(vector<int> X,vector<int> Y) {
	n=(int)X.size();
	vector<int> u,v,a,b;
	
	for (int i=0;i<n;i++) M[MP(X[i],Y[i])]=i;
	hd=tl=1; q[1]=0; vis[0]=1;
	while (hd<=tl) {
		int x=X[q[hd]],y=Y[q[hd]]; hd++;
		for (int i=0;i<4;i++) {
			int xx=x+fx[i][0],yy=y+fx[i][1];
			if (M.count(MP(xx,yy))) {
				int id=M[MP(xx,yy)]; if (vis[id]) continue;
				vis[id]=1; q[++tl]=id;
			}
		}
	}
	if (tl!=n) return 0;
	
	for (int i=0;i<n;i++) {
		int x=X[i],y=Y[i];
		int A=x+2,B=y,flag;
		if (M.count(MP(A,B))) {
			flag=1;
			if ((x+y)&2) {
				if (M.count(MP(x,y+2))&&M.count(MP(x+2,y+2))) flag=0;
			}
			if (flag) {
				u.push_back(i),v.push_back(M[MP(A,B)]);
				a.push_back(x+1); if ((x+y)&2) b.push_back(y+1); else b.push_back(y-1);
			}
		}
		A=x,B=y+2;
		if (M.count(MP(A,B))) {
			flag=1;
			if (!((x+y)&2)) {
				if (M.count(MP(x+2,y))&&M.count(MP(x+2,y+2))) flag=0;
			}
			if (flag) {
				u.push_back(i),v.push_back(M[MP(A,B)]);
				if ((x+y)&2) a.push_back(x-1); else a.push_back(x+1); b.push_back(y+1);
			}
		}
	}
	build(u,v,a,b);
	return 1;
	
	
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 234 ms 13452 KB Output is correct
10 Correct 16 ms 1740 KB Output is correct
11 Correct 103 ms 7420 KB Output is correct
12 Correct 30 ms 2508 KB Output is correct
13 Correct 38 ms 3880 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 217 ms 13500 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 234 ms 13452 KB Output is correct
10 Correct 16 ms 1740 KB Output is correct
11 Correct 103 ms 7420 KB Output is correct
12 Correct 30 ms 2508 KB Output is correct
13 Correct 38 ms 3880 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 217 ms 13500 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 688 ms 26444 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 3 ms 460 KB Output is correct
26 Correct 3 ms 460 KB Output is correct
27 Correct 3 ms 588 KB Output is correct
28 Correct 191 ms 10828 KB Output is correct
29 Correct 387 ms 16208 KB Output is correct
30 Correct 538 ms 21268 KB Output is correct
31 Correct 679 ms 26436 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 1 ms 204 KB Output is correct
41 Correct 1 ms 204 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 3 ms 332 KB Output is correct
44 Correct 2 ms 460 KB Output is correct
45 Correct 260 ms 13508 KB Output is correct
46 Correct 469 ms 19248 KB Output is correct
47 Correct 435 ms 19228 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 234 ms 13452 KB Output is correct
10 Correct 16 ms 1740 KB Output is correct
11 Correct 103 ms 7420 KB Output is correct
12 Correct 30 ms 2508 KB Output is correct
13 Correct 38 ms 3880 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 217 ms 13500 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 688 ms 26444 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 3 ms 460 KB Output is correct
26 Correct 3 ms 460 KB Output is correct
27 Correct 3 ms 588 KB Output is correct
28 Correct 191 ms 10828 KB Output is correct
29 Correct 387 ms 16208 KB Output is correct
30 Correct 538 ms 21268 KB Output is correct
31 Correct 679 ms 26436 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 1 ms 204 KB Output is correct
41 Correct 1 ms 204 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 3 ms 332 KB Output is correct
44 Correct 2 ms 460 KB Output is correct
45 Correct 260 ms 13508 KB Output is correct
46 Correct 469 ms 19248 KB Output is correct
47 Correct 435 ms 19228 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 1 ms 204 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 1 ms 204 KB Output is correct
53 Correct 1 ms 204 KB Output is correct
54 Correct 1 ms 204 KB Output is correct
55 Correct 837 ms 26452 KB Output is correct
56 Correct 1 ms 204 KB Output is correct
57 Correct 4 ms 460 KB Output is correct
58 Correct 12 ms 1144 KB Output is correct
59 Correct 7 ms 972 KB Output is correct
60 Correct 369 ms 13344 KB Output is correct
61 Correct 474 ms 17960 KB Output is correct
62 Correct 583 ms 21976 KB Output is correct
63 Correct 829 ms 26436 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 1 ms 204 KB Output is correct
67 Correct 542 ms 26460 KB Output is correct
68 Correct 622 ms 26480 KB Output is correct
69 Correct 536 ms 26272 KB Output is correct
70 Correct 4 ms 588 KB Output is correct
71 Correct 6 ms 832 KB Output is correct
72 Correct 313 ms 13416 KB Output is correct
73 Correct 445 ms 19920 KB Output is correct
74 Correct 756 ms 26356 KB Output is correct
75 Correct 715 ms 28332 KB Output is correct
76 Correct 626 ms 26432 KB Output is correct
77 Correct 4 ms 588 KB Output is correct
78 Correct 7 ms 1012 KB Output is correct
79 Correct 267 ms 13860 KB Output is correct
80 Correct 556 ms 20636 KB Output is correct
81 Correct 713 ms 27344 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 234 ms 13452 KB Output is correct
10 Correct 16 ms 1740 KB Output is correct
11 Correct 103 ms 7420 KB Output is correct
12 Correct 30 ms 2508 KB Output is correct
13 Correct 38 ms 3880 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 217 ms 13500 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 715 ms 26360 KB Output is correct
21 Correct 693 ms 26424 KB Output is correct
22 Correct 787 ms 26412 KB Output is correct
23 Correct 531 ms 22600 KB Output is correct
24 Correct 195 ms 15932 KB Output is correct
25 Correct 215 ms 16020 KB Output is correct
26 Correct 244 ms 16068 KB Output is correct
27 Correct 810 ms 26464 KB Output is correct
28 Correct 826 ms 26480 KB Output is correct
29 Correct 951 ms 26712 KB Output is correct
30 Correct 895 ms 26544 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 30 ms 2420 KB Output is correct
33 Correct 90 ms 7996 KB Output is correct
34 Correct 586 ms 26428 KB Output is correct
35 Correct 10 ms 1100 KB Output is correct
36 Correct 39 ms 4276 KB Output is correct
37 Correct 94 ms 8252 KB Output is correct
38 Correct 253 ms 10764 KB Output is correct
39 Correct 398 ms 14712 KB Output is correct
40 Correct 540 ms 18600 KB Output is correct
41 Correct 712 ms 22668 KB Output is correct
42 Correct 939 ms 26504 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 1 ms 204 KB Output is correct
45 Correct 1 ms 204 KB Output is correct
46 Correct 1 ms 204 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 1 ms 204 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 1 ms 204 KB Output is correct
53 Correct 1 ms 204 KB Output is correct
54 Correct 3 ms 332 KB Output is correct
55 Correct 2 ms 460 KB Output is correct
56 Correct 266 ms 13460 KB Output is correct
57 Correct 438 ms 19228 KB Output is correct
58 Correct 437 ms 19368 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 1 ms 204 KB Output is correct
61 Correct 1 ms 204 KB Output is correct
62 Correct 532 ms 26396 KB Output is correct
63 Correct 552 ms 26564 KB Output is correct
64 Correct 543 ms 26300 KB Output is correct
65 Correct 5 ms 588 KB Output is correct
66 Correct 6 ms 940 KB Output is correct
67 Correct 275 ms 13388 KB Output is correct
68 Correct 493 ms 19984 KB Output is correct
69 Correct 745 ms 26428 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 234 ms 13452 KB Output is correct
10 Correct 16 ms 1740 KB Output is correct
11 Correct 103 ms 7420 KB Output is correct
12 Correct 30 ms 2508 KB Output is correct
13 Correct 38 ms 3880 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 217 ms 13500 KB Output is correct
17 Correct 659 ms 26512 KB Output is correct
18 Correct 633 ms 26480 KB Output is correct
19 Correct 731 ms 26408 KB Output is correct
20 Correct 937 ms 29040 KB Output is correct
21 Correct 740 ms 24112 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 78 ms 4536 KB Output is correct
24 Correct 22 ms 1892 KB Output is correct
25 Correct 72 ms 5840 KB Output is correct
26 Correct 131 ms 9796 KB Output is correct
27 Correct 382 ms 14408 KB Output is correct
28 Correct 498 ms 17900 KB Output is correct
29 Correct 649 ms 21348 KB Output is correct
30 Correct 766 ms 24768 KB Output is correct
31 Correct 885 ms 28272 KB Output is correct
32 Correct 746 ms 28360 KB Output is correct
33 Correct 599 ms 26440 KB Output is correct
34 Correct 4 ms 588 KB Output is correct
35 Correct 7 ms 972 KB Output is correct
36 Correct 281 ms 14032 KB Output is correct
37 Correct 507 ms 20724 KB Output is correct
38 Correct 756 ms 27432 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 296 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 234 ms 13452 KB Output is correct
10 Correct 16 ms 1740 KB Output is correct
11 Correct 103 ms 7420 KB Output is correct
12 Correct 30 ms 2508 KB Output is correct
13 Correct 38 ms 3880 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 217 ms 13500 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 688 ms 26444 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 3 ms 460 KB Output is correct
26 Correct 3 ms 460 KB Output is correct
27 Correct 3 ms 588 KB Output is correct
28 Correct 191 ms 10828 KB Output is correct
29 Correct 387 ms 16208 KB Output is correct
30 Correct 538 ms 21268 KB Output is correct
31 Correct 679 ms 26436 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 1 ms 204 KB Output is correct
41 Correct 1 ms 204 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 3 ms 332 KB Output is correct
44 Correct 2 ms 460 KB Output is correct
45 Correct 260 ms 13508 KB Output is correct
46 Correct 469 ms 19248 KB Output is correct
47 Correct 435 ms 19228 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 1 ms 204 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 1 ms 204 KB Output is correct
53 Correct 1 ms 204 KB Output is correct
54 Correct 1 ms 204 KB Output is correct
55 Correct 837 ms 26452 KB Output is correct
56 Correct 1 ms 204 KB Output is correct
57 Correct 4 ms 460 KB Output is correct
58 Correct 12 ms 1144 KB Output is correct
59 Correct 7 ms 972 KB Output is correct
60 Correct 369 ms 13344 KB Output is correct
61 Correct 474 ms 17960 KB Output is correct
62 Correct 583 ms 21976 KB Output is correct
63 Correct 829 ms 26436 KB Output is correct
64 Correct 1 ms 204 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 1 ms 204 KB Output is correct
67 Correct 542 ms 26460 KB Output is correct
68 Correct 622 ms 26480 KB Output is correct
69 Correct 536 ms 26272 KB Output is correct
70 Correct 4 ms 588 KB Output is correct
71 Correct 6 ms 832 KB Output is correct
72 Correct 313 ms 13416 KB Output is correct
73 Correct 445 ms 19920 KB Output is correct
74 Correct 756 ms 26356 KB Output is correct
75 Correct 715 ms 28332 KB Output is correct
76 Correct 626 ms 26432 KB Output is correct
77 Correct 4 ms 588 KB Output is correct
78 Correct 7 ms 1012 KB Output is correct
79 Correct 267 ms 13860 KB Output is correct
80 Correct 556 ms 20636 KB Output is correct
81 Correct 713 ms 27344 KB Output is correct
82 Correct 1 ms 204 KB Output is correct
83 Correct 1 ms 204 KB Output is correct
84 Correct 1 ms 204 KB Output is correct
85 Correct 715 ms 26360 KB Output is correct
86 Correct 693 ms 26424 KB Output is correct
87 Correct 787 ms 26412 KB Output is correct
88 Correct 531 ms 22600 KB Output is correct
89 Correct 195 ms 15932 KB Output is correct
90 Correct 215 ms 16020 KB Output is correct
91 Correct 244 ms 16068 KB Output is correct
92 Correct 810 ms 26464 KB Output is correct
93 Correct 826 ms 26480 KB Output is correct
94 Correct 951 ms 26712 KB Output is correct
95 Correct 895 ms 26544 KB Output is correct
96 Correct 1 ms 204 KB Output is correct
97 Correct 30 ms 2420 KB Output is correct
98 Correct 90 ms 7996 KB Output is correct
99 Correct 586 ms 26428 KB Output is correct
100 Correct 10 ms 1100 KB Output is correct
101 Correct 39 ms 4276 KB Output is correct
102 Correct 94 ms 8252 KB Output is correct
103 Correct 253 ms 10764 KB Output is correct
104 Correct 398 ms 14712 KB Output is correct
105 Correct 540 ms 18600 KB Output is correct
106 Correct 712 ms 22668 KB Output is correct
107 Correct 939 ms 26504 KB Output is correct
108 Correct 1 ms 204 KB Output is correct
109 Correct 1 ms 204 KB Output is correct
110 Correct 1 ms 204 KB Output is correct
111 Correct 1 ms 204 KB Output is correct
112 Correct 1 ms 204 KB Output is correct
113 Correct 1 ms 204 KB Output is correct
114 Correct 1 ms 204 KB Output is correct
115 Correct 1 ms 204 KB Output is correct
116 Correct 1 ms 204 KB Output is correct
117 Correct 1 ms 204 KB Output is correct
118 Correct 1 ms 204 KB Output is correct
119 Correct 3 ms 332 KB Output is correct
120 Correct 2 ms 460 KB Output is correct
121 Correct 266 ms 13460 KB Output is correct
122 Correct 438 ms 19228 KB Output is correct
123 Correct 437 ms 19368 KB Output is correct
124 Correct 1 ms 204 KB Output is correct
125 Correct 1 ms 204 KB Output is correct
126 Correct 1 ms 204 KB Output is correct
127 Correct 532 ms 26396 KB Output is correct
128 Correct 552 ms 26564 KB Output is correct
129 Correct 543 ms 26300 KB Output is correct
130 Correct 5 ms 588 KB Output is correct
131 Correct 6 ms 940 KB Output is correct
132 Correct 275 ms 13388 KB Output is correct
133 Correct 493 ms 19984 KB Output is correct
134 Correct 745 ms 26428 KB Output is correct
135 Correct 659 ms 26512 KB Output is correct
136 Correct 633 ms 26480 KB Output is correct
137 Correct 731 ms 26408 KB Output is correct
138 Correct 937 ms 29040 KB Output is correct
139 Correct 740 ms 24112 KB Output is correct
140 Correct 1 ms 204 KB Output is correct
141 Correct 78 ms 4536 KB Output is correct
142 Correct 22 ms 1892 KB Output is correct
143 Correct 72 ms 5840 KB Output is correct
144 Correct 131 ms 9796 KB Output is correct
145 Correct 382 ms 14408 KB Output is correct
146 Correct 498 ms 17900 KB Output is correct
147 Correct 649 ms 21348 KB Output is correct
148 Correct 766 ms 24768 KB Output is correct
149 Correct 885 ms 28272 KB Output is correct
150 Correct 746 ms 28360 KB Output is correct
151 Correct 599 ms 26440 KB Output is correct
152 Correct 4 ms 588 KB Output is correct
153 Correct 7 ms 972 KB Output is correct
154 Correct 281 ms 14032 KB Output is correct
155 Correct 507 ms 20724 KB Output is correct
156 Correct 756 ms 27432 KB Output is correct
157 Correct 1 ms 204 KB Output is correct
158 Correct 1 ms 204 KB Output is correct
159 Correct 1 ms 204 KB Output is correct
160 Correct 1 ms 204 KB Output is correct
161 Correct 914 ms 26444 KB Output is correct
162 Correct 682 ms 26416 KB Output is correct
163 Correct 662 ms 26364 KB Output is correct
164 Correct 681 ms 26444 KB Output is correct
165 Correct 726 ms 26524 KB Output is correct
166 Correct 842 ms 26480 KB Output is correct
167 Correct 154 ms 6472 KB Output is correct
168 Correct 30 ms 2636 KB Output is correct
169 Correct 78 ms 6564 KB Output is correct
170 Correct 170 ms 12228 KB Output is correct
171 Correct 219 ms 16068 KB Output is correct
172 Correct 403 ms 13368 KB Output is correct
173 Correct 483 ms 16068 KB Output is correct
174 Correct 637 ms 18704 KB Output is correct
175 Correct 699 ms 21180 KB Output is correct
176 Correct 871 ms 23792 KB Output is correct
177 Correct 916 ms 26532 KB Output is correct