0_0_31931961_21207.cpp:52:25: error: stray '#' in program
pair<ll,ll> k=exgcd(a1,a2);
^
0_0_31931961_21207.cpp: In function 'int main()':
0_0_31931961_21207.cpp:52:26: error: expected unqualified-id before numeric constant
pair<ll,ll> k=exgcd(a1,a2);
^
0_0_31931961_21207.cpp:52:26: error: expected initializer before numeric constant
0_0_31931961_21207.cpp:52:30: error: 'k' was not declared in this scope
pair<ll,ll> k=exgcd(a1,a2);
^
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