For those who have WA on test 7, please try following one:
4/2*3+

For n = 10 and k = 20, what should be the output? Well, obviously it's not 0!

I created every stack using pointers, but nodes in this stack saved data of ten last pushed elements, not of one last. So this is a stack of arrays and not the stack of single elements. Also I had an additional array of int[1000], that showed how many positions in last node of each stack is already used.

Conclusion: you need to do such a struct of that has an array of ten elements and a pointer to previous node. On every push-call you should create another node(if previous is full) and add an element on the first open space of node, then increase the number of used positions. On every pop-call you should go to previous node and delete current node(if current node is empty) and print the last element of node, then decrease the number of used positions.

Hope it'll help you. And I apologize for my poor english)

a = input()
row = []
for i in a:
    row.append(i)
for i in range(len(row)):
    row[i] = int(row[i])
suml = row[0] * 100 + row[1] * 10 + row[2]
sumr = row[3] * 100 + row[4] * 10 + row[5]
if suml - sumr == 1 or sumr - suml == 1:
    print('yes')
else: print('no')

n,k = map(int, input().split())
kol = 0
u = 1
for i in range(n):
    a, b = map(int, input().split())
    if a - b == 2:
        kol += u
    else: u = 0
if kol == 0:
    print('Big Bang!')
else: print(kol)

const STACK_SIZE: usize = 128 * 1024 * 1024;

fn run() {
    //...
}

fn main() {
    let child = std::thread::Builder::new()
        .stack_size(STACK_SIZE)
        .spawn(run)
        .unwrap();
    child.join().unwrap();
}

There were mentioned, that it is required 64-bit integer type. I also add, that it has to be unsigned, otherwise you get WA 8.

Can somebody give me anti-greedy tests so that a greedy solution will not give correct answer? A test like #39? I'm sure that greedy is the right solution, i cannot find counter-test for my solution.

Guess, why I had wasted 18 attempts?
The exponent can have + sign: 1.3e+32

All bad wished to author.

#include <iostream>
#include<vector>
#include<algorithm>
using namespace std;
int main()
{
    int n, a, razn, k1 = 0, k2 = 0;
    cin >> n;
    vector<int>num;
    for (int i = 0; i < n; i++) {
        cin >> a;
        num.push_back(a);
    }
    sort(num.begin(), num.end());
    int kol = 0;
    for (int i = 0; i < n - 1; i++) {//все камни кроме максимума
        kol += num[i];
    }
    if (kol < num.back()) {//если все камни меньше самого максимального
        cout << num.back() - kol;
    }
    else if (kol == num.back()) {//если все камни pавны максимальному
        cout << 0;
    }
    else if (kol > num.back()) {//если все камни больше максимального
        k2 = num.back();
        for(int i =n-2;i>=0;i--){
            if (k1 < k2) {
                k1 += num[i];
            }
            else if (k1 > k2) {
                k2 += num[i];
            }
            else if (k1 == k2) {
                k1 = num[i];
                k2 = 0;
            }
        }
        cout << abs(k1 - k2);
    }
}

//my program is fine solves any of my values. what is in test 5?

n, m = map(int, input().split())
a = []
b = [1]
c = []
for i in range(m):
    f = int(input())
    a.append(f)
a = sorted(a)
f = 0
for i in range(1, len(a)):
    if a[i] == a[i - 1]:
       b[f] += 1
    elif a[i] != a[i - 1]:
        b.append(1)
        f += 1
for i in range(len(b)):
    b[i] = float(b[i] / m * 100)
for i in range(len(b)):
    c.append('%.2f' % b[i] + '%')
for i in range(n):
    try:
        print(c[i])
    except:
        print('0.00%')

If my teacher is watching this post, sorry.

Bruteforcing length gives WA, bruteforcing angle gives AC

I checked several times and everything is working correctly, help me


def encryption(txt):
    cipher = {'a': 0, 'b': 1, 'c': 2, 'd': 3, 'e': 4, 'f': 5, 'g': 6, 'h': 7, 'i': 8, 'j': 9, 'k': 10, 'l': 11, 'm': 12, 'n': 13, 'o': 14, 'p': 15, 'q': 16, 'r': 17, 's': 18, 't': 19, 'u': 20, 'v': 21, 'w': 22, 'x': 23, 'y': 24, 'z': 25}


    encryption_list = []
    for i in txt:
        encryption_list.append(cipher[i])

    c = d = c1 = 0
    encryption_last_list = []
    for i in encryption_list:
        if d == 0:
            d += 1
            c = i
            i -= 5

            if i < 0:
                i = 25 - abs(i)
            encryption_last_list.append(i)

        else:
            c1 = i
            i -= c
            c = c1
            if i < 0:
                i = 26 - abs(i)
            encryption_last_list.append(i)

    decodding_list = []
    for i in encryption_last_list:
        for k, v in cipher.items():
            if v == i:
                decodding_list.append(k)

    return decodding_list

text = input()
if len(text) <= 99:
    c = ''
    output = encryption(text.lower())
    for i in output:
        c += i
    print(c)

can anyone please explain the solution which uses the coordinates i think ...

Edited by author 24.01.2023 20:46

Edited by author 24.01.2023 20:46

Edited by author 24.01.2023 20:46

I get WA 1 with calculating distance in this way
for(int i=0;i<len;i++)
            {
                ans+=pow(((int)(buf[i]-'0')),3);
            }
while accepted in this way
 for(int i=0;i<len;i++)
            {
                ans+=(buf[i]-'0')*(buf[i]-'0')*(buf[i]-'0');
            }
WHY?!!!!
Is this a bug on judge or bug in function?!!
the compiler is g++

Notice, that +1 and -1 mean not victory and defeat states.

INPUT
2
L 1 +1

OUTPUT
+1

4 3
1 2
2 3
3 4

Luck is possible

be attentive with loop (while)! we know formule n - x * k =) and in depends of number parity condition will be >= (ex. [n - x * k >= n mod k] or [n - x * k >= k]). Good luck!)

Edited by author 19.01.2023 16:23

Can anyone check if I missed any scenario ?

1, 2, 3, 4, 5 => Nothing to do here"
5, 4, 3, 2, 1 => Nothing to do here"
5, 2, 3, 4, 1 => "Yes\n1 5"
1, 8, 3, 4, 5, 6, 7, 2, 9 => "Yes\n2 8"
1, 8, 7, 6, 5, 4, 3, 2, 9 => "Yes\n1 9"
9, 8, 3, 6, 5, 4, 7, 2, 1 => "Yes\n3 7"
1 => Nothing to do here"
1, 1, 1, 1, 1 => "Nothing to do here"
9, 2, 3, 5, 4, 6, 7, 8, 1 => "No hope"
1, 2, 3, 9, 5, 6, 7 => "No hope"
7, 6, 5, 9, 3, 2, 1 => "No hope"
1, 1 => "Nothing to do here"
1, 2 => "Nothing to do here"
1, 2, 4, 3, 5, 6 => "Yes\n3 4"
6, 5, 3, 4, 2, 1 => "Yes\n3 4"
2, 1, 3 => "Yes\n1 2"
1, 3, 2 => "Yes\n2 3"
1, 2, 3, 2, 3, 4, 5 => "Yes\n3 4"
1, 5, 7, 2, 4, 5 => "No hope"