0_0_18429806_1703.cpp: In function 'int main()':
0_0_18429806_1703.cpp:102:9: error: 'i' was not declared in this scope
for(i=1; i<=m; i++)
^
0_0_18429806_1703.cpp:106:32: error: 'Union' was not declared in this scope
if (Union(a[i].x,a[i].y)) sum--;
^
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