Some testcases contain empty strings, which is very nasty, and they should be read in combination with scanf and gets. I had scanf("%d\n", &N) initially, which skipped the empty lines afterwards, so my gets() calls where kind of useless.

Secondly, here are some testcases:

2
bc
abcd
1
abcx

Should return 1 2

2
bc
abcd
1
abcd

Should return 1 1

Give code please

 int main(){
    long long a;
    double b=0;
    int count=0;
    double *array = (double *)malloc(sizeof(double));
    while(scanf("%lld",&a)){
        b = sqrt(a);
        array[count]=b;
        count++;
    }
    for(int i = count-1; i >= 0; i--){
        printf("%f\n",array[i]);
    }

    return 0;
}



my code is showing above, but each time it returns the runtime error. i run it on my PC but everything is fine. is there any runtime error here?

thanks!

Problem solved

Edited by author 13.09.2017 11:45

New tests have been added to the problem. 82 authors have lost AC.

My ac program gives wrong answer on this test:
Input
1
101234

Output:
14231

Edited by author 31.08.2017 22:02

Edited by author 31.08.2017 22:02

What is the meaning of this problem ?

Edited by author 11.09.2017 19:22

Edited by author 11.09.2017 19:22

Considered several ways
Decided binary search is the best

Pls halp...

var
  i, n: integer;
  id:array of longint;
  ball: array of integer;

procedure qSort(var ar: array of integer; ra:array of longint);
  procedure sort(var ar: array of integer; low, high: integer; ra:array of longint);
  var
    i, j: integer;
    m, wsp: integer;
    b: longint;
  begin
    i := low; j := high; m := ar[(i + j) div 2];
    repeat
      while ar[i] < m do Inc(i);
      while ar[j] > m do Dec(j);
      if i <= j then begin
        wsp := ar[i]; ar[i] := ar[j]; ar[j] := wsp;
        b := ra[i]; ra[i] := ra[j]; ra[j] := b;
        Inc(i); Dec(j);
      end;
    until i > j;
    if low < j then sort(ar, low, j, ra);
    if i < high then sort(ar, i, high, ra);
  end;
begin
  sort(ar, 0, High(ar), ra);
end;

begin
  read(n);
  setlength(id,n);
  setlength(ball,n);
  for i := 0 to n-1 do
    read(id[i], ball[i]);
  qSort(ball, id);
  for i := n-1 downto 0 do
    writeln(id[i], ' ', ball[i]);
end.

What's wron? Halp pleese!

N=int(input())
s=0
for i in range(N):
    x,y=map(int,input().split())
    s*=10
    s+=(x+y)
print(s)

URAAA!

5
0 0
2 2
3 1
4 0
6 2

Answer:
5

Russian: Далее следуют M строк по 2 целых числа в каждой — координаты тараканов в настоящий момент. M + 2 строка содержит число ??? N (0 ≤ N ≤ 10000) ??? . Далее N строк — координаты кусочков сладости. Все координаты — действительные числа.

English: M lines follow, containing 2 numbers each — these are coordinates of the cockroaches at the present moment. (M + 2)nd line of the input stream contains the number ??? N (0 ≤ N ≤ 10000) ??? . N following lines contain coordinates of sweet pieces.

Can be the number of sweet pieces equal 0 ? So what will be the answer in this case ?
Answer can be empty ?

Edited by author 07.09.2017 17:23

Edited by author 07.09.2017 17:23

Задача - бомба!
Подсказка - производная...

Edited by author 07.09.2017 16:41

Edited by author 07.09.2017 16:41

I used greedy search on sorted edges in increasing order of sum of degrees of vertices (of edge). Should I refine my compare function? Other hints?

I use dp,but W4.Who can give me some hints or tests.
Thanks a lot.

My code in python 3.6:

def is_palindrom(x):
    if x==x[::-1]:
        return True
    return False

s=input()
s=s[::-1]
n=len(s)
a=[]
for x in range(2,n+1):
    for i in range(0,n-x+1):
        if is_palindrom(s[i:i+x]):
            a.append(s[i:i+x])
if len(a)==0:
    b=s[-1]
else:
    b=a[-1]
print(b)

Memory is 70160 Kb, where so much it?
Please, help, I would be grateful!

Can somebody tell me why i get memory limit exceeded in test case #9... ????
i make an k-d tree and use nearest neighbor search in my solution and still have memory limit

Edited by author 03.05.2013 07:52

Give me test#5? please!!! I tried all test from forum