/tmp/ccHppR9M.o: In function `init()':
foo.cc:(.text+0x5): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/ccHppR9M.o
foo.cc:(.text+0x29): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/ccHppR9M.o
foo.cc:(.text+0x4f): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/ccHppR9M.o
foo.cc:(.text+0x58): relocation truncated to fit: R_X86_64_PC32 against symbol `gx' defined in .bss section in /tmp/ccHppR9M.o
foo.cc:(.text+0x6b): relocation truncated to fit: R_X86_64_PC32 against symbol `gy' defined in .bss section in /tmp/ccHppR9M.o
foo.cc:(.text+0x7a): relocation truncated to fit: R_X86_64_PC32 against symbol `tx' defined in .bss section in /tmp/ccHppR9M.o
foo.cc:(.text+0x8d): relocation truncated to fit: R_X86_64_PC32 against symbol `ty' defined in .bss section in /tmp/ccHppR9M.o
/tmp/ccHppR9M.o: In function `check(int, int)':
foo.cc:(.text+0xcb): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/ccHppR9M.o
/tmp/ccHppR9M.o: In function `bfs(int, int)':
foo.cc:(.text+0x1a1): relocation truncated to fit: R_X86_64_PC32 against symbol `n' defined in .bss section in /tmp/ccHppR9M.o
foo.cc:(.text+0x1c5): relocation truncated to fit: R_X86_64_PC32 against symbol `tx' defined in .bss section in /tmp/ccHppR9M.o
foo.cc:(.text+0x232): additional relocation overflows omitted from the output
collect2: error: ld returned 1 exit status