diff --git a/README.md b/README.md
index 777ab4a1fea4d1c838444ed935deb1d8625dd663..b347d2d122ea89267dcac919b58bc92016517cf4 100644
--- a/README.md
+++ b/README.md
@@ -2,13 +2,13 @@
 ```
 cd nszw-solver
 make
-./solve QUESTIONFILE
+./solve < QUESTIONFILE
 ```
 or 
 ```
 cd nszw-solver
 g++ -o solve solver.cpp main.cpp io.c router/router.cpp -std=c++11
-./a.out QUESTIONFILE
+./solve < QUESTIONFILE
 ```
 
 # 必要ヘッダ