go tool compile: exit status 2
runtime: failed to create new OS thread (have 2 already; errno=11)
runtime: may need to increase max user processes (ulimit -u)
fatal error: newosproc

runtime stack:
runtime.throw(0xe3ac8d, 0x9)
	/usr/lib/go-1.13/src/runtime/panic.go:774 +0x72
runtime.newosproc(0xc00004e000)
	/usr/lib/go-1.13/src/runtime/os_linux.go:153 +0x1ba
runtime.newm1(0xc00004e000)
	/usr/lib/go-1.13/src/runtime/proc.go:1853 +0xdc
runtime.newm(0xe5d148, 0x0)
	/usr/lib/go-1.13/src/runtime/proc.go:1832 +0x8f
runtime.main.func1()
	/usr/lib/go-1.13/src/runtime/proc.go:134 +0x36
runtime.systemstack(0x45a4d4)
	/usr/lib/go-1.13/src/runtime/asm_amd64.s:370 +0x66
runtime.mstart()
	/usr/lib/go-1.13/src/runtime/proc.go:1146

goroutine 1 [running]:
runtime.systemstack_switch()
	/usr/lib/go-1.13/src/runtime/asm_amd64.s:330 fp=0xc00004a760 sp=0xc00004a758 pc=0x45a5d0
runtime.main()
	/usr/lib/go-1.13/src/runtime/proc.go:133 +0x63 fp=0xc00004a7e0 sp=0xc00004a760 pc=0x42f3b3
runtime.goexit()
	/usr/lib/go-1.13/src/runtime/asm_amd64.s:1357 +0x1 fp=0xc00004a7e8 sp=0xc00004a7e0 pc=0x45c521

[Hydro](https://hydro.ac)提供评测服务