Submission #2526024

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

Submission Info

Judge Result