Buggy python submission (verdict: Runtime Error):
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        let mut next = || { iter.next().unwrap() };
        input_inner!{next, $($r)*}
    };
    ($($r:tt)*) => {
        let stdin = std::io::stdin();
        let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));
        let mut next = move || -> String{
            bytes
                .by_ref()
                .map(|r|r.unwrap() as char)
                .skip_while(|c|c.is_whitespace())
                .take_while(|c|!c.is_whitespace())
                .collect()
        };
        input_inner!{next, $($r)*}
    };
}

macro_rules! input_inner {
    ($next:expr) => {};
    ($next:expr, ) => {};

    ($next:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($next, $t);
        input_inner!{$next $($r)*}
    };
}

macro_rules! read_value {
    ($next:expr, ( $($t:tt),* )) => {
        ( $(read_value!($next, $t)),* )
    };

    ($next:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()
    };

    ($next:expr, chars) => {
        read_value!($next, String).chars().collect::<Vec<char>>()
    };

    ($next:expr, usize1) => {
        read_value!($next, usize) - 1
    };

    ($next:expr, $t:ty) => {
        $next().parse::<$t>().expect("Parse error")
    };
}

fn main() {
    input! {
    n: usize,
    a: [i32; n],
    }
    let mut upper: i32 = 2 * (10_i32.pow(9));
    let mut lower = 0;
    let mut ans_list = vec![];
    loop {
        let mut half = (upper + lower) / 2;
        if half % 2 == 1 {
            half += (upper + lower) % 2
        }
        let mut tmp = half;
        ans_list.push(tmp);
        for i in 0..n {
            tmp = 2 * (a[i] - tmp / 2);
            if i == n-1 {
                if tmp == ans_list[0] {
                    break
                } else {
                    ans_list.clear();
                    if i % 2 == 0{
                        upper = half
                    } else {
                        lower = half
                    }
                }
                break
            }
            else {
                if tmp < 0 {
                    if i % 2 == 0 {
                        upper = half
                    } else {
                        lower = half
                    }
                    ans_list.clear();
                    break
                } else {
                    ans_list.push(tmp);
                }
            }
        }
        if ans_list.len() == n {
            break
        }
    }
    for i in 0..n {
        print!("{}", ans_list[i]);
        if i < n-1 {
            print!("{}", " ");
        }
    }
}

Fixed submission:
N = int(input())
A = list(map(int, input().split()))

S = sum(A)
x1 = S - 2 * sum([A[i] for i in range(len(A)) if i % 2 == 1])
ansList = [x1]
for i in range(1, N):
    tmp = 2 * A[i-1] - ansList[-1]
    ansList.append(tmp)
ansList = [str(a) for a in ansList]
ans = ' '.join(ansList)
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = list(map(int, input().split()))

# 山1に降った雨の量を二分探索する
upper = 2 * (10 ** 9)
lower = 0

ansList = []
while True:
    half = (upper + lower) // 2
    if half % 2 == 1:
        half += (upper + lower) % 2
    tmp = half
    ansList = [half]
    for i, a in enumerate(A):
        tmp = 2 * (a - tmp//2)
        if i == N-1:
            if tmp == ansList[0]:
                break
            else:
                ansList = []
                if i % 2 == 0:
                    upper = half
                else:
                    lower = half
                break
        else:
            if tmp < 0:
                if i % 2 == 0:
                    upper = half
                else:
                    lower = half
                ansList = []
                break
            else:
                ansList.append(tmp)
    if len(ansList) == N:
        break
ansList = [str(a) for a in ansList]
ans = ' '.join(ansList)
print(ans)

Fixed submission:
N = int(input())
A = list(map(int, input().split()))

S = sum(A)
x1 = S - 2 * sum([A[i] for i in range(len(A)) if i % 2 == 1])
ansList = [x1]
for i in range(1, N):
    tmp = 2 * A[i-1] - ansList[-1]
    ansList.append(tmp)
ansList = [str(a) for a in ansList]
ans = ' '.join(ansList)
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = list(map(int, input().split()))

# 山1に降った雨の量を二分探索する
upper = 2 * (10 ** 9)
lower = 0

ansList = []
while True:
    half = (upper + lower) // 2
    if half % 2 == 1:
        half += (upper + lower) % 2
    tmp = half
    ansList = [half]
    for i, a in enumerate(A):
        tmp = 2 * (a - tmp//2)
        if i == N-1:
            if tmp == ansList[0]:
                break
            else:
                ansList = []
                if i % 2 == 0:
                    upper = half
                else:
                    lower = half
                break
        else:
            if tmp < 0:
                if i % 2 == 0:
                    upper = half
                else:
                    lower = half
                ansList = []
                break
            else:
                ansList.append(tmp)
    if len(ansList) == N:
        break
ansList = [str(a) for a in ansList]
ans = ' '.join(ansList)
print(ans)

Fixed submission:
N = int(input())
A = list(map(int, input().split()))

S = sum(A)
x1 = S - 2 * sum([A[i] for i in range(len(A)) if i % 2 == 1])
ansList = [x1]
for i in range(1, N):
    tmp = 2 * A[i-1] - ansList[-1]
    ansList.append(tmp)
ansList = [str(a) for a in ansList]
ans = ' '.join(ansList)
print(ans)