modify flops constraint (#859)

demo/optimizer.py

@@ -16,6 +16,7 @@ from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
 
+import os
 import math
 
 import paddle

docs/en/quick_start/nas_tutorial_en.md

@@ -165,7 +165,7 @@ for step in range(3):
     train_loader, eval_loader = input_data(images, label)
 
     current_flops = slim.analysis.flops(train_program)
-    if current_flops > 321208544:
+    if current_flops > 6555276:
         continue
 
     for epoch in range(7):

docs/zh_cn/quick_start/static/nas_tutorial.md

@@ -164,7 +164,7 @@ for step in range(3):
     train_loader, eval_loader = input_data(images, label)
 
     current_flops = slim.analysis.flops(train_program)
-    if current_flops > 321208544:
+    if current_flops > 6555276:
         continue
 
     for epoch in range(7):