Below you can see the front-view size comparison of the Olympus 1s and Fujifilm HS35EXR. The Olympus 1s is clearly the smaller of the two cameras. Its body is 15mm narrower, 10 mm shorter and 69 mm thinner than the Fujifilm HS35EXR.
The chart below depicts how two cameras compare with average dimensions of the cameras in their class.