N = int(input())
stol = []
for i in range(N):
Ti, Zi = map(int, input().split())
stol += [[i, Ti, Zi]]
#print(stol)
stol = sorted(stol, key = lambda x: x[2])
#print(stol)
for i in range(N-1):
koliko = stol[i][1]
j = i + 1
while koliko > 0 and j < N:
t = stol[j][1]
stol[j][1] = min(stol[j][2], stol[j][1] + koliko)
koliko = koliko - (stol[j][1] - t)
stol[i][1] = koliko
j += 1
#print(stol)
stol = sorted(stol, key = lambda x: x[0])
#print(stol)
ukupno = 0
for i in range(N):
if stol[i][1] == 0:
ukupno += 1
print(ukupno)
for i in range(N):
print(stol[i][1], end = ' ')