0_0_14582209_20784.cpp: In function 'node operator*(node, node)':
0_0_14582209_20784.cpp:13:24: error: 'm' was not declared in this scope
for(int i=1;i<=m;i++)
^
0_0_14582209_20784.cpp: In function 'bool operator==(node, node)':
0_0_14582209_20784.cpp:23:24: error: 'm' was not declared in this scope
for(int i=1;i<=m;i++)
^
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