Buggy python submission (verdict: Runtime Error):
#include <bits/stdc++.h>
using namespace std;

typedef pair<int,int> ii;

const int MAXN = 200005;

int N, K, L, u, v, visited[2][MAXN], cnt[2] = {1, 2};
vector<int> adjList[2][MAXN];

map<ii,int> m;

void dfs(int id, int node) {
    if (visited[id][node]) {
        return;
    } else {
        visited[id][node] = cnt[id];

        for (int i = 0; i < adjList[id][node].size(); i++) {
            int neighbor = adjList[id][node][i];

            dfs(id, neighbor);
        }
    }
}

int main() {

    scanf("%d%d%d", &N, &K, &L);
    for (int i = 0; i < K; i++) {
        scanf("%d%d", &u, &v);

        adjList[0][u].push_back(v);
        adjList[0][v].push_back(u);
    }

    for (int i = 0; i < L; i++) {
        scanf("%d%d", &u, &v);

        adjList[1][u].push_back(v);
        adjList[1][v].push_back(u);
    }

    for (int i = 1; i <= N; i++) {
        if (!visited[0][i]) {
            dfs(0, i); cnt[0] += 2;
        }
        if (!visited[1][i]) {
            dfs(1, i); cnt[1] += 2;
        }
    }

    for (int i = 1; i <= N; i++) {
        m[ii(visited[0][i], visited[1][i])]++;
    }

    for (int i = 1; i <= N; i++) {
        cout << m[ii(visited[0][i], visited[1][i])] << " ";
    }

    return 0;
}

Fixed submission:
T = ["maerd", "remaerd", "esare", "resare"]

s = raw_input()
s = s[::-1]

ans = True
while True:
	if s == "":
		ans = True
		break
	elif s[0] == "m" and len(s) >= len(T[0]) and s[:len(T[0])] == T[0]:
		s = s[len(T[0]):]
	elif s[0] == "r" and len(s) > 2:
		if s[2] == "m" and len(s) >= len(T[1]) and s[:len(T[1])] == T[1]:
			s = s[len(T[1]):]
		elif s[2] == "s" and len(s) >= len(T[3]) and s[:len(T[3])] == T[3]:
			s = s[len(T[3]):]
		else:
			ans = False
			break
	elif s[0] == "e" and len(s) >= len(T[2]) and s[:len(T[2])] == T[2]:
		s = s[len(T[2]):]
	else:
		ans = False
		break

if ans:
	print "YES"
else:
	print "NO"

Buggy python submission (verdict: Runtime Error):
T = ["maerd", "remaerd", "esare", "resare"]

def match(s):
	if s == "":
		return True
	elif s[0] == "m" and len(s) >= len(T[0]) and s[:len(T[0])] == T[0]:
		return match(s[len(T[0]):])
	elif s[0] == "r" and len(s) > 2:
		if s[2] == "m" and len(s) >= len(T[1]) and s[:len(T[1])] == T[1]:
			return match(s[len(T[1]):])
		elif s[2] == "s" and len(s) >= len(T[3]) and s[:len(T[3])] == T[3]:
			return match(s[len(T[3]):])
		else:
			return False
	elif s[0] == "e" and len(s) >= len(T[2]) and s[:len(T[2])] == T[2]:
		return match(s[len(T[2]):])
	else:
		return False

S = raw_input()
S = S[::-1]
if match(S):
	print "YES"
else:
	print "NO"

Fixed submission:
T = ["maerd", "remaerd", "esare", "resare"]

s = raw_input()
s = s[::-1]

ans = True
while True:
	if s == "":
		ans = True
		break
	elif s[0] == "m" and len(s) >= len(T[0]) and s[:len(T[0])] == T[0]:
		s = s[len(T[0]):]
	elif s[0] == "r" and len(s) > 2:
		if s[2] == "m" and len(s) >= len(T[1]) and s[:len(T[1])] == T[1]:
			s = s[len(T[1]):]
		elif s[2] == "s" and len(s) >= len(T[3]) and s[:len(T[3])] == T[3]:
			s = s[len(T[3]):]
		else:
			ans = False
			break
	elif s[0] == "e" and len(s) >= len(T[2]) and s[:len(T[2])] == T[2]:
		s = s[len(T[2]):]
	else:
		ans = False
		break

if ans:
	print "YES"
else:
	print "NO"

Buggy python submission (verdict: Runtime Error):
T = ["dream", "dreamer", "erase", "eraser"]

def match(s):
	if s == "":
		return True
	else:
		ans = False
		for i in T:
			if len(i) <= len(s) and s[:len(i)] == i:
				ans |= match(s[len(i):])
		return ans

S = raw_input()
if match(S):
	print "YES"
else:
	print "NO"

Fixed submission:
T = ["maerd", "remaerd", "esare", "resare"]

s = raw_input()
s = s[::-1]

ans = True
while True:
	if s == "":
		ans = True
		break
	elif s[0] == "m" and len(s) >= len(T[0]) and s[:len(T[0])] == T[0]:
		s = s[len(T[0]):]
	elif s[0] == "r" and len(s) > 2:
		if s[2] == "m" and len(s) >= len(T[1]) and s[:len(T[1])] == T[1]:
			s = s[len(T[1]):]
		elif s[2] == "s" and len(s) >= len(T[3]) and s[:len(T[3])] == T[3]:
			s = s[len(T[3]):]
		else:
			ans = False
			break
	elif s[0] == "e" and len(s) >= len(T[2]) and s[:len(T[2])] == T[2]:
		s = s[len(T[2]):]
	else:
		ans = False
		break

if ans:
	print "YES"
else:
	print "NO"