0_0_33420709_9553.cpp: In function 'int main()':
0_0_33420709_9553.cpp:46:15: error: 'class std::vector<int>' has no member named 'eb'
mp[a].eb(b);
^
0_0_33420709_9553.cpp:47:15: error: 'class std::vector<int>' has no member named 'eb'
mp[b].eb(a);
^
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