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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#752160#9570. Binary Treehuang123zsAC ✓261ms16040kbC++143.0kb2024-11-15 22:22:012024-11-15 22:22:02

Judging History

你现在查看的是最新测评结果

  • [2024-11-15 22:22:02]
  • 评测
  • 测评结果：AC
  • 用时：261ms
  • 内存：16040kb
查看
  • [2024-11-15 22:22:01]
  • 提交

answer

#include<bits/stdc++.h>
#define LL long long
using namespace std;
const int N=2.1e5;
int n,d[N],siz[N],cont,fa[N];
int head[N],to[N*2],nxt[N*2],tot;
bool flg[N];
void add_edge(int x,int y){
	++tot;
	to[tot]=y;
	nxt[tot]=head[x];
	d[y]++;
	head[x]=tot;
}
void dfs(int x,int sumsiz){
	siz[x]=1;
	int maxsiz=0;
	for(int i=head[x];i;i=nxt[i]){
		int y=to[i];
//		cerr<<y<<endl;
		if(y==fa[x]||flg[y]) continue;
		fa[y]=x;
		dfs(y,sumsiz);
		siz[x]+=siz[y];
		maxsiz=max(maxsiz,siz[y]);
	}
	maxsiz=max(maxsiz,sumsiz-siz[x]);
//	cerr<<x<<" "<<maxsiz<<" "<<siz[x]<<endl;
	if(maxsiz<=sumsiz/2)
		cont=x;
}
int ask(int x,int y){
	int res;
	cout<<"? "<<x<<" "<<y<<endl;
	cout.flush();
	cin>>res;
	return res;
}
int solve(int x,int sumsiz){
//	cerr<<"solve:"<<x<<" "<<sumsiz<<endl;
	if(sumsiz==1) return x;
	fa[x]=-1;
	dfs(x,sumsiz);
//	cerr<<cont<<endl; 
	if(d[cont]==1){
		int son;
		for(int i=head[x];i;i=nxt[i])
			if(!flg[to[i]])
				son=to[i];
		int t=ask(son,x);
		return t?x:son;
	}
	else if(d[cont]==2){
//		cerr<<"Case2"<<endl;
		int son[3],top=0;
		for(int i=head[cont];i;i=nxt[i])
			if(!flg[to[i]])
				son[++top]=to[i];
		int t=ask(son[1],son[2]);
		if(t==0){
			--d[son[1]];
			flg[cont]=1;
			return solve(son[1],son[1]==fa[cont]?sumsiz-siz[cont]:siz[son[1]]);
		}
		else if(t==1)
			return cont;
		else{
			--d[son[2]];
			flg[cont]=1;
			return solve(son[2],son[2]==fa[cont]?sumsiz-siz[cont]:siz[son[2]]);
		}
	}
	else{
//		cerr<<"Case3"<<endl;
		int son[3],top=-1,sonsiz[3];
		for(int i=head[cont];i;i=nxt[i])
			if(!flg[to[i]]){
				son[++top]=to[i];
				sonsiz[top]=(son[top]==fa[cont]?sumsiz-siz[cont]:siz[son[top]]);
			}
		if(sonsiz[0]>sonsiz[1]) swap(son[0],son[1]),swap(sonsiz[0],sonsiz[1]);
		if(sonsiz[1]>sonsiz[2]) swap(son[1],son[2]),swap(sonsiz[1],sonsiz[2]);
		if(sonsiz[0]>sonsiz[1]) swap(son[0],son[1]),swap(sonsiz[0],sonsiz[1]);
		if(sonsiz[0]>sonsiz[1]) swap(son[0],son[1]),swap(sonsiz[0],sonsiz[1]);
		if(sonsiz[1]>sonsiz[2]) swap(son[1],son[2]),swap(sonsiz[1],sonsiz[2]);
		if(sonsiz[0]>sonsiz[1]) swap(son[0],son[1]),swap(sonsiz[0],sonsiz[1]);
//		cerr<<son[0]<<" "<<sonsiz[0]<<"   "<<son[1]<<" "<<sonsiz[1]<<"   "<<son[2]<<' '<<sonsiz[2]<<endl;
		int t=ask(son[1],son[2]);
		if(t==0){
			--d[son[1]];
			flg[cont]=1;
			return solve(son[1],sonsiz[1]);
		}
		else if(t==1){
//			cerr<<son[0]<<endl;
			d[cont]-=2;
			flg[son[1]]=flg[son[2]]=1;
			return solve(cont,sonsiz[0]+1);
		}
		else{
			--d[son[2]];
			flg[cont]=1;
			return solve(son[2],sonsiz[2]);
		}
	}
}
int main(){
//	freopen(".in","r",stdin);
//	freopen(".out","w",stdout);
	ios::sync_with_stdio(false);
	int casecnt;
	cin>>casecnt;
	while(casecnt--){
		cin>>n;
		for(int i=1;i<=n;++i){
			head[i]=0;
			flg[i]=0;
			d[i]=0;
		}
		tot=0;
		for(int i=1;i<=n;++i){
			int x,y;
			cin>>x>>y;
			if(x) add_edge(x,i),add_edge(i,x);
			if(y) add_edge(y,i),add_edge(i,y);
		}
		int res=solve(1,n);
		cout<<"! "<<res<<endl;
		cout.flush();
	} 
	return 0;
}
Source code, Language: C++14

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 9788kb

input:

2
5
0 0
1 5
2 4
0 0
0 0
2
0
2
0 2
0 0
2

output:

? 1 3
? 4 3
! 4
? 2 1
! 1

result:

ok OK (2 test cases)

Test #2:

score: 0
Accepted
time: 30ms
memory: 7908kb

input:

5555
8
2 0
8 6
0 0
3 0
0 0
7 0
0 0
5 4
2
0
0
8
0 0
1 4
2 0
0 0
7 8
0 0
3 0
6 0
0
0
2
8
5 8
0 0
1 7
0 0
0 0
4 2
0 0
6 0
2
1
2
5
4 5
3 1
0 0
0 0
0 0
1
0
8
0 0
0 0
5 6
0 0
1 4
2 0
3 8
0 0
1
2
5
3 0
5 1
0 0
0 0
4 0
0
0
5
5 0
0 0
0 0
3 0
2 4
2
2
3
3 0
1 0
0 0
2
2
2 0
0 0
2
3
2 3
0 0
0 0
2
10
2 8
9 7
0 0
...

output:

? 6 8
? 4 5
? 3 4
! 3
? 7 2
? 8 7
? 6 8
! 8
? 3 8
? 2 4
? 8 6
! 6
? 4 2
? 5 1
! 5
? 6 5
? 8 3
! 3
? 1 5
? 3 1
! 3
? 1 4
? 3 4
! 4
? 2 3
! 3
? 2 1
! 1
? 3 2
! 2
? 1 7
? 4 7
? 3 6
! 3
? 2 1
! 2
? 9 5
? 8 4
? 5 3
! 5
? 10 3
? 6 8
? 2 4
! 4
? 3 9
? 7 1
? 9 2
! 2
? 2 1
! 1
? 3 4
? 7 1
! 1
? 9 4
? 4 8
? 3...

result:

ok OK (5555 test cases)

Test #3:

score: 0
Accepted
time: 27ms
memory: 7872kb

input:

600
2
2 0
0 0
2
3
2 0
3 0
0 0
2
4
4 0
1 0
0 0
3 0
2
2
5
4 0
0 0
1 0
2 0
3 0
0
0
6
4 0
6 0
2 0
5 0
0 0
1 0
0
0
7
7 0
3 0
6 0
5 0
2 0
1 0
0 0
2
0
8
7 0
0 0
2 0
8 0
1 0
5 0
3 0
6 0
0
0
2
9
7 0
4 0
2 0
1 0
0 0
8 0
9 0
5 0
6 0
2
2
2
10
9 0
6 0
8 0
7 0
0 0
10 0
2 0
4 0
5 0
1 0
2
2
2
11
2 0
10 0
6 0
9 0
0 ...

output:

? 2 1
! 1
? 3 1
! 1
? 2 4
? 3 4
! 4
? 3 4
? 5 3
! 5
? 6 4
? 3 6
! 3
? 6 2
? 2 4
! 2
? 5 7
? 8 5
? 4 8
! 8
? 9 1
? 1 2
? 3 2
! 2
? 10 2
? 8 7
? 2 7
! 7
? 9 2
? 10 6
? 2 10
! 2
? 1 6
? 2 4
? 11 4
! 4
? 3 2
? 12 7
? 12 1
! 1
? 12 9
? 8 11
? 12 11
! 11
? 14 2
? 4 7
? 6 7
! 6
? 13 8
? 14 10
? 12 14
? 4 1...

result:

ok OK (600 test cases)

Test #4:

score: 0
Accepted
time: 64ms
memory: 16040kb

input:

2
99999
21832 0
77205 0
62668 0
58313 0
14640 0
76941 0
62678 0
8464 0
43145 0
26195 0
46140 0
83205 0
40047 0
81645 0
27077 0
92036 0
14236 0
3576 0
15430 0
75654 0
29049 0
62218 0
83318 0
1116 0
77861 0
9755 0
49236 0
70959 0
62295 0
33580 0
88208 0
55840 0
71061 0
24695 0
88831 0
1891 0
57285 0
9...

output:

? 43991 70790
? 98261 46637
? 86742 20402
? 93018 13737
? 183 65869
? 51361 8313
? 24878 68217
? 84601 3877
? 77534 68008
? 69893 66421
? 91982 32490
? 82073 36979
? 1510 39039
? 42790 23766
? 39822 46593
? 46593 20402
! 20402
? 85780 5676
? 57748 39704
? 58489 42043
? 30188 50842
? 36012 24131
? 98...

result:

ok OK (2 test cases)

Test #5:

score: 0
Accepted
time: 33ms
memory: 11364kb

input:

15
3
0 0
1 0
2 0
1
7
6 0
3 0
5 0
0 0
7 0
4 0
1 0
2
2
15
6 0
5 0
1 0
7 0
14 0
11 0
15 0
12 0
2 0
4 0
9 0
13 0
0 0
8 0
3 0
0
0
0
31
3 0
31 0
17 0
23 0
4 0
13 0
1 0
12 0
6 0
0 0
20 0
26 0
14 0
29 0
8 0
25 0
21 0
19 0
5 0
15 0
18 0
10 0
22 0
7 0
28 0
2 0
24 0
30 0
27 0
9 0
16 0
2
0
0
2
63
15 0
62 0
5 0
...

output:

? 3 1
! 2
? 1 5
? 5 2
! 2
? 9 6
? 8 5
? 13 8
! 13
? 29 13
? 16 2
? 9 28
? 9 13
! 13
? 8 37
? 10 24
? 57 12
? 41 25
? 25 12
! 63
? 89 36
? 71 6
? 54 9
? 91 107
? 111 53
? 111 91
! 91
? 233 64
? 246 68
? 239 76
? 34 110
? 160 163
? 212 57
? 212 76
! 212
? 48 439
? 468 437
? 322 37
? 316 202
? 164 57
?...

result:

ok OK (15 test cases)

Test #6:

score: 0
Accepted
time: 41ms
memory: 12744kb

input:

16
2
2 0
0 0
2
4
4 0
3 0
1 0
0 0
0
0
8
5 0
0 0
4 0
8 0
2 0
3 0
6 0
1 0
2
0
2
16
2 0
5 0
1 0
11 0
13 0
14 0
8 0
6 0
0 0
4 0
3 0
7 0
15 0
10 0
16 0
9 0
0
2
2
2
32
15 0
0 0
14 0
18 0
26 0
17 0
25 0
27 0
6 0
9 0
4 0
13 0
23 0
30 0
32 0
12 0
11 0
31 0
28 0
3 0
19 0
10 0
22 0
7 0
5 0
29 0
24 0
20 0
21 0
1...

output:

? 2 1
! 1
? 3 4
? 2 3
! 2
? 1 4
? 6 4
? 7 6
! 6
? 11 1
? 10 6
? 6 7
? 12 7
! 7
? 16 13
? 29 19
? 5 7
? 27 7
? 8 27
! 8
? 24 8
? 20 6
? 10 13
? 25 32
? 25 7
? 29 7
! 29
? 113 80
? 115 16
? 112 63
? 25 50
? 81 89
? 81 11
? 114 11
! 11
? 106 3
? 72 82
? 224 78
? 105 13
? 156 44
? 184 54
? 212 184
? 121...

result:

ok OK (16 test cases)

Test #7:

score: 0
Accepted
time: 40ms
memory: 11744kb

input:

15
2
2 0
0 0
2
6
5 0
1 0
6 0
2 0
3 0
0 0
2
2
14
12 0
0 0
11 0
5 0
7 0
1 0
8 0
10 0
14 0
13 0
6 0
9 0
2 0
4 0
0
0
1
30
10 0
29 0
23 0
28 0
9 0
14 0
2 0
30 0
19 0
0 0
15 0
1 0
22 0
8 0
18 0
27 0
7 0
24 0
26 0
3 0
20 0
25 0
6 0
17 0
4 0
12 0
21 0
16 0
13 0
5 0
0
0
0
2
62
24 0
22 0
18 0
17 0
49 0
53 0
3...

output:

? 2 1
! 1
? 2 5
? 5 6
! 6
? 4 9
? 10 7
? 2 10
! 13
? 27 20
? 13 2
? 25 28
? 25 13
! 13
? 30 33
? 32 4
? 61 45
? 43 46
? 46 61
! 20
? 94 9
? 69 59
? 21 4
? 64 27
? 95 6
? 27 6
! 27
? 12 100
? 118 71
? 44 192
? 197 42
? 74 106
? 170 60
? 197 60
! 60
? 449 68
? 319 190
? 450 334
? 422 170
? 437 35
? 28...

result:

ok OK (15 test cases)

Test #8:

score: 0
Accepted
time: 28ms
memory: 7704kb

input:

600
2
2 0
0 0
2
3
3 2
0 0
0 0
2
4
3 0
0 0
0 0
1 2
0
0
5
0 0
3 1
4 5
0 0
0 0
2
0
6
3 5
1 4
0 0
6 0
0 0
0 0
2
0
7
3 7
0 0
0 0
2 5
0 0
1 4
0 0
0
1
8
0 0
3 7
1 0
2 5
6 8
0 0
0 0
0 0
2
1
2
9
9 8
0 0
7 2
0 0
0 0
0 0
0 0
4 5
3 6
2
1
2
10
3 6
8 0
4 2
5 7
0 0
10 9
0 0
0 0
0 0
0 0
2
1
2
11
0 0
4 9
5 8
6 3
0 0...

output:

? 2 1
! 1
? 2 3
! 3
? 4 3
? 2 4
! 2
? 4 2
? 1 2
! 1
? 3 2
? 6 2
! 6
? 4 1
? 5 2
! 4
? 3 4
? 6 4
? 8 5
! 5
? 3 1
? 4 1
? 5 8
! 8
? 4 1
? 10 1
? 9 6
! 6
? 6 2
? 10 2
? 11 9
! 9
? 11 1
? 1 4
? 10 4
! 10
? 7 13
? 11 9
? 5 6
! 5
? 11 12
? 10 5
? 13 4
! 13
? 14 8
? 5 2
? 6 11
! 11
? 9 10
? 2 8
? 4 5
! 4
?...

result:

ok OK (600 test cases)

Test #9:

score: 0
Accepted
time: 48ms
memory: 9012kb

input:

2
99999
0 0
7999 97267
75750 37659
0 0
0 0
33761 92098
90707 18838
13602 27569
0 0
0 0
0 0
0 0
0 0
0 0
0 0
14586 86647
1519 23132
0 0
3430 14643
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
47066 36968
95308 38482
34100 25297
0 0
0 0
0 0
0 0
88902 58991
0 0
0 0
66315 68538
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0...

output:

? 69076 50379
? 11838 79924
? 15463 18079
? 88632 41708
? 89674 37031
? 10610 13061
? 9674 45858
? 79520 8472
? 15283 44732
? 73157 75657
? 69906 50760
? 67104 9677
? 89523 89655
? 93235 70757
? 95546 60320
! 60320
? 78976 72481
? 84675 96633
? 81852 2124
? 84822 64228
? 55776 50823
? 89542 22888
? ...

result:

ok OK (2 test cases)

Test #10:

score: 0
Accepted
time: 27ms
memory: 8852kb

input:

15
3
3 2
0 0
0 0
1
7
0 0
3 6
0 0
7 2
0 0
0 0
5 1
2
2
15
14 12
0 0
0 0
0 0
8 6
10 11
0 0
3 7
2 4
0 0
0 0
0 0
15 5
0 0
9 1
0
0
0
31
4 9
0 0
29 17
0 0
0 0
15 31
5 21
18 14
0 0
0 0
0 0
16 2
12 7
0 0
23 10
0 0
30 13
0 0
24 27
11 26
0 0
0 0
0 0
0 0
19 20
0 0
0 0
0 0
6 25
8 1
28 22
2
0
0
2
63
53 48
40 57
0...

output:

? 2 3
! 1
? 2 7
? 1 5
! 5
? 5 15
? 6 8
? 11 10
! 11
? 17 29
? 25 6
? 20 19
? 26 11
! 11
? 2 1
? 57 40
? 11 33
? 9 12
? 22 7
! 12
? 115 20
? 45 48
? 15 88
? 8 102
? 50 93
? 70 59
! 59
? 140 70
? 196 206
? 130 254
? 150 6
? 191 87
? 82 81
? 86 113
! 86
? 121 60
? 71 305
? 225 284
? 15 251
? 268 276
? ...

result:

ok OK (15 test cases)

Test #11:

score: 0
Accepted
time: 34ms
memory: 8608kb

input:

16
2
0 0
1 0
2
4
4 2
0 0
0 0
3 0
2
2
8
3 0
0 0
0 0
0 0
1 2
0 0
6 4
5 7
2
1
2
16
16 15
0 0
0 0
0 0
7 11
8 10
0 0
13 0
0 0
0 0
0 0
3 9
0 0
4 2
5 14
6 12
2
2
2
0
32
0 0
22 21
25 18
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
5 10
30 0
1 24
12 31
0 0
0 0
16 8
3 15
11 26
23 14
28 20
6 9
0 0
13 27
0 0
0 0
7 17
0 0
0 ...

output:

? 2 1
! 1
? 2 4
? 3 4
! 4
? 1 8
? 4 6
? 8 7
! 7
? 15 16
? 12 6
? 10 8
? 13 8
! 13
? 2 19
? 15 3
? 18 25
? 27 13
? 30 13
! 30
? 14 9
? 24 58
? 32 29
? 3 17
? 39 15
? 57 15
! 57
? 83 28
? 21 75
? 7 10
? 38 30
? 44 41
? 24 70
! 70
? 218 221
? 243 199
? 123 66
? 165 247
? 171 94
? 77 99
? 157 130
! 130
...

result:

ok OK (16 test cases)

Test #12:

score: 0
Accepted
time: 30ms
memory: 10100kb

input:

15
2
0 0
1 0
2
6
6 4
1 5
0 0
0 0
3 0
0 0
2
2
14
0 0
1 7
5 11
13 9
0 0
2 8
0 0
10 0
0 0
0 0
0 0
14 6
0 0
3 4
2
0
1
30
7 0
5 13
0 0
0 0
14 30
15 20
0 0
0 0
3 19
0 0
0 0
11 21
9 1
16 24
0 0
0 0
28 2
8 10
0 0
0 0
0 0
0 0
18 6
0 0
4 29
12 25
0 0
23 26
0 0
27 22
2
0
0
2
62
0 0
0 0
28 47
7 38
0 0
0 0
17 26...

output:

? 2 1
! 1
? 6 2
? 3 2
! 2
? 6 14
? 4 3
? 9 13
! 4
? 2 28
? 26 23
? 25 12
? 29 4
! 4
? 36 61
? 30 18
? 50 31
? 32 3
? 6 52
! 52
? 44 18
? 93 53
? 69 51
? 21 122
? 98 43
? 16 55
! 43
? 196 253
? 224 42
? 61 81
? 101 214
? 28 156
? 229 11
? 29 237
! 237
? 30 69
? 172 210
? 233 19
? 228 186
? 269 352
? ...

result:

ok OK (15 test cases)

Test #13:

score: 0
Accepted
time: 24ms
memory: 7712kb

input:

600
2
0 0
1 0
2
3
0 0
1 3
0 0
2
4
2 4
0 0
0 0
3 0
0
0
5
2 5
0 0
0 0
0 0
4 3
2
0
6
6 4
0 0
0 0
3 0
2 1
0 0
0
0
7
0 0
0 0
2 4
5 6
0 0
0 0
1 3
2
0
8
2 7
0 0
6 0
0 0
8 3
0 0
4 5
0 0
2
0
2
9
5 2
0 0
7 4
6 8
0 0
0 0
0 0
9 1
0 0
2
2
2
10
3 5
10 7
0 0
0 0
6 2
0 0
4 0
9 1
0 0
0 0
2
0
2
11
9 6
4 1
0 0
0 0
11 ...

output:

? 2 1
! 1
? 3 1
! 1
? 4 2
? 3 4
! 3
? 4 1
? 2 1
! 2
? 5 4
? 2 5
! 2
? 7 4
? 6 5
! 6
? 1 5
? 3 8
? 6 3
! 3
? 1 4
? 6 3
? 7 3
! 3
? 2 1
? 8 3
? 9 8
! 8
? 1 10
? 11 10
? 7 10
! 7
? 1 12
? 11 12
? 2 11
! 11
? 4 2
? 2 12
? 10 2
! 2
? 12 8
? 8 10
? 7 10
! 10
? 9 14
? 14 1
? 15 11
! 15
? 15 10
? 10 2
? 5 9...

result:

ok OK (600 test cases)

Test #14:

score: 0
Accepted
time: 63ms
memory: 13140kb

input:

2
99999
96748 53986
34197 77552
29863 63559
79099 26449
45078 1051
0 0
27416 4135
0 0
38606 81189
93892 68603
48776 185
79602 18311
51243 83678
89044 40032
28883 35663
0 0
0 0
21603 15821
0 0
51448 75971
70275 8326
0 0
0 0
57049 72937
3297 94939
0 0
59258 39159
3205 34675
54876 24769
0 0
0 0
0 0
851...

output:

? 96970 71188
? 6820 87538
? 32876 59029
? 20365 46360
? 9490 49372
? 97012 17131
? 47373 63260
? 14744 92007
? 67467 36878
? 66274 41734
? 77459 59354
? 11246 74882
? 41558 40648
? 43092 83313
? 17131 83313
? 69161 83313
! 69161
? 86513 70265
? 36225 11800
? 25987 99536
? 63730 59217
? 84543 29352
...

result:

ok OK (2 test cases)

Test #15:

score: 0
Accepted
time: 34ms
memory: 10120kb

input:

15
3
0 0
1 3
0 0
1
7
0 0
1 7
0 0
6 2
3 4
0 0
0 0
2
2
15
2 11
0 0
13 1
12 14
0 0
0 0
5 8
10 4
0 0
0 0
0 0
0 0
0 0
6 15
9 3
2
2
0
31
24 22
0 0
31 6
0 0
4 3
11 19
0 0
0 0
28 21
25 20
0 0
0 0
0 0
2 16
0 0
27 18
8 10
15 17
26 1
23 29
7 5
12 14
0 0
0 0
0 0
0 0
0 0
0 0
30 13
0 0
0 0
2
2
2
1
63
51 35
33 57
...

output:

? 3 1
! 2
? 5 2
? 7 1
! 1
? 4 15
? 15 1
? 11 2
! 11
? 1 14
? 18 10
? 10 29
? 13 30
! 29
? 44 38
? 1 42
? 9 2
? 2 34
? 23 5
! 5
? 31 51
? 62 96
? 8 100
? 89 52
? 52 82
? 57 70
! 70
? 122 124
? 102 162
? 231 84
? 135 110
? 223 147
? 147 236
? 80 201
! 236
? 266 322
? 414 146
? 335 72
? 306 66
? 76 89
...

result:

ok OK (15 test cases)

Test #16:

score: 0
Accepted
time: 33ms
memory: 10492kb

input:

16
2
0 0
1 0
2
4
0 0
1 0
4 2
0 0
0
0
8
0 0
0 0
0 0
3 5
8 6
2 0
1 4
0 0
2
0
0
16
0 0
7 8
0 0
1 2
0 0
0 0
0 0
5 10
3 0
12 16
14 13
0 0
15 4
0 0
0 0
6 9
2
2
0
0
32
26 17
5 31
28 25
18 7
0 0
0 0
14 12
15 0
22 4
0 0
29 1
19 2
0 0
0 0
0 0
6 8
10 21
0 0
0 0
0 0
13 3
0 0
0 0
0 0
32 30
0 0
20 9
0 0
0 0
23 16...

output:

? 2 1
! 1
? 3 1
? 4 3
! 4
? 7 5
? 6 8
? 2 6
! 2
? 4 8
? 8 16
? 9 6
? 3 9
! 3
? 17 11
? 2 7
? 7 9
? 27 22
? 20 27
! 20
? 10 31
? 60 6
? 22 45
? 45 26
? 4 14
? 64 14
! 64
? 37 24
? 56 55
? 25 61
? 10 115
? 115 85
? 120 27
? 21 120
! 120
? 89 60
? 208 248
? 99 203
? 222 234
? 210 108
? 108 173
? 42 131...

result:

ok OK (16 test cases)

Test #17:

score: 0
Accepted
time: 34ms
memory: 10468kb

input:

15
2
0 0
1 0
2
6
0 0
5 0
1 2
0 0
0 0
4 3
2
0
14
8 14
0 0
0 0
0 0
0 0
12 11
10 0
0 0
2 7
0 0
4 1
0 0
3 6
5 9
2
0
0
30
29 21
6 9
0 0
0 0
0 0
0 0
0 0
19 17
24 30
0 0
14 26
23 0
0 0
0 0
25 18
0 0
7 20
16 12
0 0
13 11
28 8
10 15
0 0
0 0
0 0
3 22
5 2
0 0
0 0
4 1
0
2
0
2
62
0 0
34 33
0 0
0 0
0 0
37 45
0 0
...

output:

? 2 1
! 1
? 6 2
? 5 2
! 5
? 11 14
? 14 7
? 5 14
! 5
? 20 8
? 26 15
? 12 15
? 23 12
! 12
? 59 42
? 15 2
? 52 16
? 16 15
? 62 15
! 15
? 17 40
? 77 69
? 74 20
? 80 38
? 38 81
? 64 38
! 38
? 189 90
? 224 65
? 73 185
? 206 107
? 19 78
? 78 90
? 96 78
! 96
? 192 60
? 44 285
? 25 327
? 414 246
? 221 137
? ...

result:

ok OK (15 test cases)

Test #18:

score: 0
Accepted
time: 57ms
memory: 9248kb

input:

2
99999
0 0
88119 0
72740 0
6901 19702
0 0
10620 84889
0 0
9552 63972
45156 60768
9152 72379
0 0
59875 97207
48193 0
17282 54916
65927 27713
80083 15817
36966 75381
0 0
77279 56298
0 0
11554 61779
0 0
89976 0
65282 42151
95206 62876
97329 86772
0 0
0 0
0 0
11820 0
0 0
20432 0
50520 39907
0 0
46948 1...

output:

? 35226 52174
? 16093 26122
? 10853 11494
? 91694 11494
? 73088 90037
? 21572 90037
? 91442 51091
? 93596 7067
? 14316 75096
? 55875 75096
? 41734 42793
? 42793 59747
? 67072 472
? 64770 59747
! 92650
? 36933 80592
? 68004 50906
? 65219 73367
? 33796 20489
? 19704 74041
? 74041 35779
? 85560 35779
?...

result:

ok OK (2 test cases)

Test #19:

score: 0
Accepted
time: 261ms
memory: 7696kb

input:

100000
2
0 0
0 1
2
2
0 0
0 1
0
2
0 0
0 1
2
2
0 0
0 1
0
2
0 0
0 1
2
2
0 0
0 1
0
2
0 0
0 1
0
2
0 0
0 1
0
2
0 0
0 1
0
2
0 0
0 1
2
2
0 0
0 1
0
2
0 0
0 1
0
2
0 0
0 1
2
2
0 0
0 1
2
2
0 0
0 1
0
2
0 0
0 1
2
2
0 0
0 1
2
2
0 0
0 1
2
2
0 0
0 1
2
2
0 0
0 1
0
2
0 0
0 1
0
2
0 0
0 1
0
2
0 0
0 1
2
2
0 0
0 1
0
2
0 0...

output:

? 2 1
! 1
? 2 1
! 2
? 2 1
! 1
? 2 1
! 2
? 2 1
! 1
? 2 1
! 2
? 2 1
! 2
? 2 1
! 2
? 2 1
! 2
? 2 1
! 1
? 2 1
! 2
? 2 1
! 2
? 2 1
! 1
? 2 1
! 1
? 2 1
! 2
? 2 1
! 1
? 2 1
! 1
? 2 1
! 1
? 2 1
! 1
? 2 1
! 2
? 2 1
! 2
? 2 1
! 2
? 2 1
! 1
? 2 1
! 2
? 2 1
! 2
? 2 1
! 1
? 2 1
! 1
? 2 1
! 1
? 2 1
! 1
? 2 1
! 1
...

result:

ok OK (100000 test cases)

Extra Test:

score: 0
Extra Test Passed
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Server Time: 2025-01-20 15:49:14 | OpenSource Project