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100
5 8
1 2
1 3
1 4
1 5
2 1
3 1
4 1
5 1
5 10
1 3
1 4
2 3
2 5
3 1
3 4
3 5
4 2
5 1
5 3
5 10
1 4
2 3
2 5
3 1
3 5
4 2
4 3
4 5
5 1
5 2
3 6
1 2
1 3
2 1
2 3
3 1
3 2
5 10
1 2
1 5
2 3
2 4
3 1
4 3
4 5
5 2
5 3
5 4
4 10
1 2
1 3
1 4
2 1
2 3
2 4
3 1
3 4
4 2
4 3
5 10
1 2
1 3
2 1
2 4
3 1
3 5
4 2
4 5
5 3
5 4
5 10
1 ...

Case #1: 9
1 5 1 4 1 3 1 2 1 
Case #2: 12
1 4 2 5 3 5 1 3 4 2 3 1 
Case #3: 14
1 4 5 2 5 1 4 3 5 1 4 2 3 1 
Case #4: 7
1 3 2 3 1 2 1 
Case #5: 14
1 5 4 5 3 1 5 2 4 3 1 2 3 1 
Case #6: 13
1 4 3 4 2 4 2 3 1 3 1 2 1 
Case #7: 11
1 3 5 4 5 3 1 2 4 2 1 
Case #8: 14
1 4 3 5 2 4 2 3 5 2 1 3 5 1 
Case #9: 1...

wrong answer you didn't visit each building the same number of times (test case 1)

100
199 4980
1 95
1 96
1 105
1 124
1 130
1 131
1 135
1 137
1 139
1 140
1 141
1 147
1 155
1 172
1 174
1 179
1 183
1 188
1 193
1 196
1 197
2 3
2 5
2 13
2 14
2 17
2 20
2 24
2 26
2 30
2 41
2 44
2 45
2 52
2 56
2 67
2 70
2 71
2 74
2 78
2 84
2 85
2 90
2 92
2 93
2 97
2 107
2 111
2 113
2 122
2 124
2 128
2 13...

Case #1: 5277
1 197 193 197 193 195 197 193 188 199 193 183 197 193 174 199 181 199 179 199 171 197 193 172 196 197 181 197 179 195 196 187 196 183 193 171 196 181 195 179 192 198 192 196 179 188 196 172 195 171 195 169 199 170 199 160 199 158 199 156 199 155 195 166 197 174 193 168 193 166 193 161 ...

wrong answer you didn't visit each building the same number of times (test case 1)