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0_0_11973603_29621.cpp:1:24: bits/stdc++.h: No such file or directory
0_0_11973603_29621.cpp: In function `double dis(int, int, int, int)':
0_0_11973603_29621.cpp:4: error: `sqrt' undeclared (first use this function)
0_0_11973603_29621.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11973603_29621.cpp: In function `int main()':
0_0_11973603_29621.cpp:7: error: `scanf' undeclared (first use this function)
0_0_11973603_29621.cpp:19: error: `printf' undeclared (first use this function)