reccusion not Working in Python3
Difference between en4 and en5, changed 0 character(s)
i was trying the question [problem:839C] in python3 and wrote a recursive program when i submitted it,it gave runtime error i tried changing recursion depth(although when i saw the test cases it passed a case with n=100000 and gave RE on n=90000) . it still didn't work then i wrote the same code in cpp and it got excepted . the same thing also happened on [problem:580C] where there was some problem with recursion not working properly .can anybody tell what is going wrong.↵

### python code for Journey [submission:88623570]↵


~~~~~↵
import math↵
import time↵
from collections import defaultdict,deque↵
from sys import stdin,stdout↵
from bisect import bisect_left,bisect_right↵
from queue import PriorityQueue ↵
import sys↵
sys.setrecursionlimit(10**5)↵
def find(curr,parent,prob,plen):↵
    leaf=True↵
    for i in graph[curr]:↵
        if(i!=parent):↵
            if(curr!=1):↵
                find(i,curr,prob/(len(graph[curr])-1),plen+1)↵
            else:↵
                find(i,curr,prob/(len(graph[curr])),plen+1)↵
            leaf=False↵
    if(leaf):↵
        ans[0]+=prob*plen↵
n=int(stdin.readline())↵
graph=defaultdict(lambda:[])↵
for i in range(n-1):↵
    u,v=map(int,stdin.readline().split())↵
    graph[u].append(v)↵
    graph[v].append(u)↵
ans=[0]↵
find(1,-1,1,0)↵
print(ans[0])↵
~~~~~↵


### cpp code(Working) for Journey [submission:88623478]↵
~~~~~↵
using namespace std;↵
const long long A = 100000000000000LL, N = 10e5 +10;↵

vector<long long> a[N];↵
long long c[N], x, y, i, j, n, m;↵
double o = 0.0;↵

void go(int v, int pr, double prob, int len)↵
{↵
bool leaf = 1;↵
for (int i = 0; i < a[v].size(); i++)↵
if (a[v][i] != pr)↵
{↵
leaf = 0;↵
if (v != 0)↵
go(a[v][i], v, prob / double(a[v].size() &mdash; 1), len + 1);↵
else↵
go(a[v][i], v, prob / double(a[v].size()), len + 1);↵
}↵
if (leaf)↵
o += prob * len;↵
}↵

int main()↵
{↵
cin >> n;↵
for (i = 0; i < n &mdash; 1; i++)↵
{↵
scanf("%d%d", &x, &y), x--, y--, a[x].pb(y), a[y].pb(x);↵
}↵
go(0, -1, 1.0, 0);↵
cout << fixed << setprecision(9) << o << "\n";↵
}↵
~~~~~↵


### python code for Kefa and Park [submission:88620540]↵
~~~~~↵
import sys↵
final=[0]↵
sys.setrecursionlimit(100010)↵
def find(curr,parent,cats):↵
    if(cats>m):↵
        return ↵
    ok=1↵
    for i in graph[curr]:↵
        if(i!=parent):↵
            ok=0↵
            find(i,curr,cats*a[i]+a[i])↵
    final[0]+=ok↵
n,m=map(int,stdin.readline().split())↵
a=list(map(int,stdin.readline().split()))↵
graph=defaultdict(lambda:[])↵
for _ in range(n-1):↵
    x,y=map(int,stdin.readline().split())↵
    x-=1↵
    y-=1↵
    graph[x].append(y)↵
    graph[y].append(x)↵
find(0,-1,a[0])↵
print(final[0])↵
~~~~~↵
### cpp code(Working) for Kefa and Park [submission:88620695]↵
~~~~~↵
using namespace std;↵
const long long A=100000000000000LL,N=228228;↵
 ↵
vector<long long> a[N];↵
long long c[N],o,x,y,i,j,n,m;↵
 ↵
void go(int v,int pr,int k){↵
if(k>m)return;↵
int ok=1;↵
for(int i=0;i<a[v].size();i++)if(a[v][i]!=pr)ok=0,go(a[v][i],v,k*c[a[v][i]]+c[a[v][i]]);↵
o+=ok;↵
}↵
 ↵
int main(){↵
cin>>n>>m;↵
for(i=0;i<n;i++)scanf("%d",&c[i]);↵
for(i=1;i<n;i++)scanf("%d%d",&x,&y),x--,y--,a[x].pb(y),a[y].pb(x);↵
go(0,-1,c[0]);↵
cout<<o<<"\n";↵
}↵
~~~~~↵

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  Rev. Lang. By When Δ Comment
en6 English numberslayer 2020-08-01 14:11:32 4 Tiny change: 'nd it got excepted . t' -> 'nd it got accepted . t'
en5 English numberslayer 2020-08-01 14:10:11 0 (published)
en4 English numberslayer 2020-08-01 01:04:14 0 (saved to drafts)
en3 English numberslayer 2020-08-01 00:59:57 375
en2 English numberslayer 2020-08-01 00:51:34 511
en1 English numberslayer 2020-08-01 00:50:49 3851 Initial revision (published)