#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 */

/* Variables and functions */
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ scanf(char *, int *);
int main() {
  printf("checkpoint1");
  int n;
  scanf("%d", &n);
  int ans = 0, i;
  for (i = 0; i < n; i++) {
    int temp;
    scanf("%d", &temp);
    ans += temp;
  }
  printf("%d\n", ans);
  printf("checkpoint2\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xec8(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
movl   $0x0,-0xc(%rbp)
movl   $0x0,-0x10(%rbp)
mov    -0x10(%rbp),%eax
cmp    -0x8(%rbp),%eax
jge    118e <main+0x6e>
lea    0xe9e(%rip),%rdi
lea    -0x14(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0x14(%rbp),%eax
add    -0xc(%rbp),%eax
mov    %eax,-0xc(%rbp)
mov    -0x10(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0x10(%rbp)
jmp    115b <main+0x3b>
mov    -0xc(%rbp),%esi
lea    0xe77(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
lea    0xe6d(%rip),%rdi
mov    $0x0,%al
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %rbx
push   %rax
lea    0xec2(%rip),%rdi
xor    %ebx,%ebx
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xebe(%rip),%rdi
mov    %rsp,%rsi
call   1050 <scanf@plt>
cmpl   $0x0,(%rsp)
jle    1187 <main+0x57>
xor    %ebp,%ebp
lea    0xea7(%rip),%r14
lea    0x4(%rsp),%r15
xor    %ebx,%ebx
nopl   0x0(%rax)
mov    %r14,%rdi
mov    %r15,%rsi
call   1050 <scanf@plt>
add    0x4(%rsp),%ebx
add    $0x1,%ebp
cmp    (%rsp),%ebp
jl     1170 <main+0x40>
lea    0xe81(%rip),%rdi
mov    %ebx,%esi
xor    %eax,%eax
call   1040 <printf@plt>
lea    0xe75(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
pop    %r15
pop    %rbp
ret

LLVM IR (-O0):
@.str = [12 x i8] c"checkpoint1\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [4 x i8] c"%d\0A\00"
@.str.3 = [13 x i8] c"checkpoint2\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
%5 = alloca i32
store i32 0, i32* %1
%6 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0))
%7 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
store i32 0, i32* %3
store i32 0, i32* %4
br label %8
8: ; preds = %17, %0
%9 = load i32, i32* %4
%10 = load i32, i32* %2
%11 = icmp slt i32 %9, %10
br i1 %11, label %12, label %20
12: ; preds = %8
%13 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %5)
%14 = load i32, i32* %5
%15 = load i32, i32* %3
%16 = add nsw i32 %15, %14
store i32 %16, i32* %3
br label %17
17: ; preds = %12
%18 = load i32, i32* %4
%19 = add nsw i32 %18, 1
store i32 %19, i32* %4
br label %8
20: ; preds = %8
%21 = load i32, i32* %3
%22 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %21)
%23 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str = [12 x i8] c"checkpoint1\00"
@.str.1 = [3 x i8] c"%d\00"
@.str.2 = [4 x i8] c"%d\0A\00"
@str = [12 x i8] c"checkpoint2\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = tail call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i64 0, i64 0))
%4 = bitcast i32* %1 to i8*
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %1)
%6 = load i32, i32* %1
%7 = icmp sgt i32 %6, 0
br i1 %7, label %8, label %19
8: ; preds = %0
%9 = bitcast i32* %2 to i8*
br label %10
10: ; preds = %8, %10
%11 = phi i32 [ 0, %8 ], [ %16, %10 ]
%12 = phi i32 [ 0, %8 ], [ %15, %10 ]
%13 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.1, i64 0, i64 0), i32* %2)
%14 = load i32, i32* %2
%15 = add nsw i32 %14, %12
%16 = add nuw nsw i32 %11, 1
%17 = load i32, i32* %1
%18 = icmp slt i32 %16, %17
br i1 %18, label %10, label %19
19: ; preds = %10, %0
%20 = phi i32 [ 0, %0 ], [ %15, %10 ]
%21 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %20)
%22 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @str, i64 0, i64 0))
ret i32 0
}