#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);
int /*<<< orphan*/ scanf(char *, int *);
int main() {
  int n = 0;
  int op = 0;
  int sum = 0;
  scanf("%d", &n);
  while (n != 0) {
    sum = 0;
    while (n-- > 0) {
      scanf("%d", &op);
      sum += op;
    }
    printf("%d\n", sum);
    scanf("%d", &n);
  }
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
movl   $0x0,-0x8(%rbp)
movl   $0x0,-0xc(%rbp)
movl   $0x0,-0x10(%rbp)
lea    0xeb5(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
cmpl   $0x0,-0x8(%rbp)
je     11bb <main+0x9b>
movl   $0x0,-0x10(%rbp)
mov    -0x8(%rbp),%eax
mov    %eax,%ecx
add    $0xffffffff,%ecx
mov    %ecx,-0x8(%rbp)
cmp    $0x0,%eax
jle    1197 <main+0x77>
lea    0xe80(%rip),%rdi
lea    -0xc(%rbp),%rsi
call   1040 <scanf@plt>
mov    -0xc(%rbp),%eax
add    -0x10(%rbp),%eax
mov    %eax,-0x10(%rbp)
jmp    1165 <main+0x45>
mov    -0x10(%rbp),%esi
lea    0xe62(%rip),%rdi
call   1030 <printf@plt>
lea    0xe53(%rip),%rdi
lea    -0x8(%rbp),%rsi
call   1040 <scanf@plt>
jmp    1154 <main+0x34>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r12
push   %rbx
sub    $0x10,%rsp
movl   $0x0,0x8(%rsp)
movl   $0x0,0xc(%rsp)
lea    0xebd(%rip),%rdi
lea    0x8(%rsp),%rsi
call   1040 <scanf@plt>
mov    0x8(%rsp),%eax
test   %eax,%eax
je     11c0 <main+0xa0>
lea    0xea4(%rip),%rbx
lea    0xc(%rsp),%r14
lea    0xe9b(%rip),%r15
lea    0x8(%rsp),%r12
jmp    118d <main+0x6d>
nop
mov    %r15,%rdi
mov    %ebp,%esi
call   1030 <printf@plt>
mov    %rbx,%rdi
mov    %r12,%rsi
call   1040 <scanf@plt>
mov    0x8(%rsp),%eax
test   %eax,%eax
je     11c0 <main+0xa0>
lea    -0x1(%rax),%ecx
mov    %ecx,0x8(%rsp)
xor    %ebp,%ebp
test   %eax,%eax
jle    1170 <main+0x50>
nopw   0x0(%rax,%rax,1)
mov    %rbx,%rdi
mov    %r14,%rsi
call   1040 <scanf@plt>
add    0xc(%rsp),%ebp
mov    0x8(%rsp),%eax
lea    -0x1(%rax),%ecx
mov    %ecx,0x8(%rsp)
test   %eax,%eax
jg     11a0 <main+0x80>
jmp    1170 <main+0x50>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
pop    %rbp
ret

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

LLVM IR (-O2):
@.str = [3 x i8] c"%d\00"
@.str.1 = [4 x i8] c"%d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = bitcast i32* %1 to i8*
store i32 0, i32* %1
%4 = bitcast i32* %2 to i8*
store i32 0, i32* %2
%5 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %1)
%6 = load i32, i32* %1
%7 = icmp eq i32 %6, 0
br i1 %7, label %26, label %8
8: ; preds = %0, %20
%9 = phi i32 [ %24, %20 ], [ %6, %0 ]
%10 = add nsw i32 %9, -1
store i32 %10, i32* %1
%11 = icmp sgt i32 %9, 0
br i1 %11, label %12, label %20
12: ; preds = %8, %12
%13 = phi i32 [ %16, %12 ], [ 0, %8 ]
%14 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %2)
%15 = load i32, i32* %2
%16 = add nsw i32 %15, %13
%17 = load i32, i32* %1
%18 = add nsw i32 %17, -1
store i32 %18, i32* %1
%19 = icmp sgt i32 %17, 0
br i1 %19, label %12, label %20
20: ; preds = %12, %8
%21 = phi i32 [ 0, %8 ], [ %16, %12 ]
%22 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0), i32 %21)
%23 = call i32 @scanf(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0), i32* %1)
%24 = load i32, i32* %1
%25 = icmp eq i32 %24, 0
br i1 %25, label %26, label %8
26: ; preds = %20, %0
ret i32 0
}