Record Case Detail

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ASAN:DEADLYSIGNAL
=================================================================
==24695==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x55ac9deb023a bp 0x602000005a70 sp 0x7ffe51927f30 T0)
==24695==The signal is caused by a WRITE memory access.
==24695==Hint: address points to the zero page.
    #0 0x55ac9deb0239 in Dlist<int>::removeBack() (/out/package/sam_mem+0x5239)
    #1 0x55ac9deae9b5 in main (/out/package/sam_mem+0x39b5)
    #2 0x7fce04009b96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
    #3 0x55ac9deafad9 in _start (/out/package/sam_mem+0x4ad9)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/out/package/sam_mem+0x5239) in Dlist<int>::removeBack()
==24695==ABORTING

Your answer may be identical to the JOJ answer in the first several lines.

However, the main problem you meet now is Runtime Error. And the exit code of your program is 1, which should be 0.

Please double check your code to solve this problem and try again.

1100217460 -2147473392 1113311975 
991126037 1823808463 -455709487 1338111506 1705195028 -1609537983 635844959 1726926833 1100217460 1566602227 1331103719 1688584211 2126042410 635844959 1055424873 -455709487

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