Accepted
/in/foo.cc: In function 'int dfs(int, int)': /in/foo.cc:24:12: warning: 'g' may be used uninitialized in this function [-Wmaybe-uninitialized] root[l][r]=g;//找出父亲节点 ~~~~~~~~~~^~
/in/foo.cc: In function 'int dfs(int, int)': /in/foo.cc:24:12: warning: 'g' may be used uninitialized in this function [-Wmaybe-uninitialized] root[l][r]=g;//找出父亲节点 ~~~~~~~~~~^~