int -> int64_t for array shape
int -> int64_t for array shape

wkentaro/chainer,hvy/chainer,niboshi/chainer,niboshi/chainer,chainer/chainer,niboshi/chainer,hvy/chainer,chainer/chainer,chainer/chainer,niboshi/chainer,wkentaro/chainer,chainer/chainer,wkentaro/chainer,hvy/chainer,pfnet/chainer,hvy/chainer,wkentaro/chainer