Dump of assembler code for function phase_4:
0x0000000000400fa1 <+0>: sub $0x18,%rsp
0x0000000000400fa5 <+4>: lea 0x8(%rsp),%rcx
0x0000000000400faa <+9>: lea 0xc(%rsp),%rdx
0x0000000000400faf <+14>: mov $0x40278d,%esi
0x0000000000400fb4 <+19>: mov $0x0,%eax
0x0000000000400fb9 <+24>: callq 0x400ba0 <__isoc99_sscanf@plt>
0x0000000000400fbe <+29>: cmp $0x2,%eax
0x0000000000400fc1 <+32>: jne 0x400fca <phase_4+41>
0x0000000000400fc3 <+34>: cmpl $0xe,0xc(%rsp)
0x0000000000400fc8 <+39>: jbe 0x400fcf <phase_4+46>
0x0000000000400fca <+41>: callq 0x4014e4 <explode_bomb>
0x0000000000400fcf <+46>: mov $0xe,%edx
0x0000000000400fd4 <+51>: mov $0x0,%esi
0x0000000000400fd9 <+56>: mov 0xc(%rsp),%edi
0x0000000000400fdd <+60>: callq 0x400f6e <func4>
0x0000000000400fe2 <+65>: cmp $0xa,%eax
0x0000000000400fe5 <+68>: jne 0x400fee <phase_4+77>
0x0000000000400fe7 <+70>: cmpl $0xa,0x8(%rsp)
0x0000000000400fec <+75>: je 0x400ff3 <phase_4+82>
0x0000000000400fee <+77>: callq 0x4014e4 <explode_bomb>
0x0000000000400ff3 <+82>: add $0x18,%rsp
0x0000000000400ff7 <+86>: retq
End of assembler dump.
Dump of assembler code for function func4:
0x0000000000400f6e <+0>: push %rbx
0x0000000000400f6f <+1>: mov %edx,%eax
0x0000000000400f71 <+3>: sub %esi,%eax
0x0000000000400f73 <+5>: mov %eax,%ebx
0x0000000000400f75 <+7>: shr $0x1f,%ebx
0x0000000000400f78 <+10>: add %ebx,%eax
0x0000000000400f7a <+12>: sar %eax
0x0000000000400f7c <+14>: lea (%rax,%rsi,1),%ebx
0x0000000000400f7f <+17>: cmp %edi,%ebx
0x0000000000400f81 <+19>: jle 0x400f8f <func4+33>
0x0000000000400f83 <+21>: lea -0x1(%rbx),%edx
0x0000000000400f86 <+24>: callq 0x400f6e <func4>
0x0000000000400f8b <+29>: add %ebx,%eax
0x0000000000400f8d <+31>: jmp 0x400f9f <func4+49>
0x0000000000400f8f <+33>: mov %ebx,%eax
0x0000000000400f91 <+35>: cmp %edi,%ebx
0x0000000000400f93 <+37>: jge 0x400f9f <func4+49>
0x0000000000400f95 <+39>: lea 0x1(%rbx),%esi
0x0000000000400f98 <+42>: callq 0x400f6e <func4>
0x0000000000400f9d <+47>: add %ebx,%eax
0x0000000000400f9f <+49>: pop %rbx
0x0000000000400fa0 <+50>: retq
End of assembler dump.
我已经确定第一个参数需要在0-14范围内。另外，我已经意识到第二个参数必须是10（十进制）。但是，我只是想不出第一个论点。输入：0调用func4后，在eax中产生11。我已经为第一个参数尝试了-1但是测试条件没有通过并且调用了explode_bomb。任何指针或提示将不胜感激。谢谢你的时间。欢呼声。