0_0_20724703_7964.cpp: In function 'void kruskal()':
0_0_20724703_7964.cpp:31:6: error: 'i' was not declared in this scope
for(i=0;i<n;i++)
^
0_0_20724703_7964.cpp:34:9: error: 'y' was not declared in this scope
if(x!=y)
^
0_0_20724703_7964.cpp:37:9: error: 'val' was not declared in this scope
min+=val;
^
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