#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */
typedef int /*<<< orphan*/ FILE;

/* Variables and functions */
char *BigMultiply(char *, char *);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ fgets(char *, int, int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ printf(char *, char *);
int main() {
  FILE *ifp = fopen("input.txt", "r");
  char value1[200000 + 1];
  char value2[200000 + 1];
  fgets(value1, 200000, ifp);
  fgets(value2, 200000, ifp);
  printf("The answer is %s\n", BigMultiply(value1, value2));
  fclose(ifp);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x61ab0,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xe97(%rip),%rdi
lea    0xe9a(%rip),%rsi
call   1070 <fopen@plt>
mov    %rax,-0x10(%rbp)
lea    -0x30d60(%rbp),%rdi
mov    -0x10(%rbp),%rdx
mov    $0x30d40,%esi
call   1050 <fgets@plt>
lea    -0x61ab0(%rbp),%rdi
mov    -0x10(%rbp),%rdx
mov    $0x30d40,%esi
call   1050 <fgets@plt>
lea    -0x30d60(%rbp),%rdi
lea    -0x61ab0(%rbp),%rsi
call   1060 <BigMultiply@plt>
mov    %rax,%rsi
lea    0xe4c(%rip),%rdi
call   1040 <printf@plt>
mov    -0x10(%rbp),%rdi
call   1030 <fclose@plt>
xor    %eax,%eax
add    $0x61ab0,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
sub    $0x61aa0,%rsp
lea    0xe9d(%rip),%rdi
lea    0xea0(%rip),%rsi
call   1070 <fopen@plt>
mov    %rax,%rbx
lea    0x30d50(%rsp),%r14
mov    %r14,%rdi
mov    $0x30d40,%esi
mov    %rax,%rdx
call   1050 <fgets@plt>
mov    %rsp,%r15
mov    %r15,%rdi
mov    $0x30d40,%esi
mov    %rbx,%rdx
call   1050 <fgets@plt>
mov    %r14,%rdi
mov    %r15,%rsi
call   1060 <BigMultiply@plt>
lea    0xe5d(%rip),%rdi
mov    %rax,%rsi
call   1040 <printf@plt>
mov    %rbx,%rdi
call   1030 <fclose@plt>
xor    %eax,%eax
add    $0x61aa0,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
@.str = [10 x i8] c"input.txt\00"
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [18 x i8] c"The answer is %s\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32*
%3 = alloca [200001 x i8]
%4 = alloca [200001 x i8]
store i32 0, i32* %1
%5 = call i32* @fopen(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
store i32* %5, i32** %2
%6 = getelementptr inbounds [200001 x i8], [200001 x i8]* %3, i64 0, i64 0
%7 = load i32*, i32** %2
%8 = call i32 @fgets(i8* %6, i32 200000, i32* %7)
%9 = getelementptr inbounds [200001 x i8], [200001 x i8]* %4, i64 0, i64 0
%10 = load i32*, i32** %2
%11 = call i32 @fgets(i8* %9, i32 200000, i32* %10)
%12 = getelementptr inbounds [200001 x i8], [200001 x i8]* %3, i64 0, i64 0
%13 = getelementptr inbounds [200001 x i8], [200001 x i8]* %4, i64 0, i64 0
%14 = call i8* @BigMultiply(i8* %12, i8* %13)
%15 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0), i8* %14)
%16 = load i32*, i32** %2
%17 = call i32 @fclose(i32* %16)
ret i32 0
}

LLVM IR (-O2):
@.str = [10 x i8] c"input.txt\00"
@.str.1 = [2 x i8] c"r\00"
@.str.2 = [18 x i8] c"The answer is %s\0A\00"
define i32 @main() {
%1 = alloca [200001 x i8]
%2 = alloca [200001 x i8]
%3 = tail call i32* @fopen(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.1, i64 0, i64 0))
%4 = getelementptr inbounds [200001 x i8], [200001 x i8]* %1, i64 0, i64 0
%5 = getelementptr inbounds [200001 x i8], [200001 x i8]* %2, i64 0, i64 0
%6 = call i32 @fgets(i8* %4, i32 200000, i32* %3)
%7 = call i32 @fgets(i8* %5, i32 200000, i32* %3)
%8 = call i8* @BigMultiply(i8* %4, i8* %5)
%9 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0), i8* %8)
%10 = call i32 @fclose(i32* %3)
ret i32 0
}