Submission #2525837

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Source Code Expand

da = list(map(int,input().split()))
k = [0]*da[1]
ta = [0]*da[0]
t = [0]*da[0]
a = [0]*da[1]
p = 0
for i in range(da[1]):
  k[i] = list(map(int,input().split()))
  if  k[i][0] != k[i][1]:
    ta[k[i][0]-1] += 1
    ta[k[i][1]-1] += 1
  else:
    ta[k[i][0]-1] += 1
 
for i in range(da[0]):
  if ta[i] >= 2:
    t[i] = 1
 
for i in range(da[1]):
  if t[k[i][0] - 1] == 1 and t[k[i][1] - 1] == 1:
    p += 1
    a[i] = 1
 
print(p)
 
for i in range(da[1]):
  if a[i] ==1:
    print(i+1)

Submission Info

Judge Result