0_0_29947244_10002.cpp:65:20: error: '::main' must return 'int'
long long int main(){
^
0_0_29947244_10002.cpp: In function 'int main()':
0_0_29947244_10002.cpp:75:9: error: 'prlong' was not declared in this scope
prlong long intf("%d\n",DFS(1,1));
^
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