diff --git a/fexp.cpp b/fexp.cpp
new file mode 100644
index 0000000..ce0654e
--- /dev/null
+++ b/fexp.cpp
@@ -0,0 +1,35 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+const int mod = 1e9 + 7;
+
+inline int fmul(int x, int y) {
+  int ans = 0;
+  for(; y; y >>= 1) {
+    if(y & 1) {
+      ans = (ans + x) % mod;
+    }
+    x = (x + x) % mod;
+  }
+  return ans;
+}
+
+inline int fexp(int x, int e) {
+  int ans = 1;
+  for(; e; e >>= 1) {
+    if(e & 1) {
+      ans = fmul(ans, x);
+    }
+    x = fmul(x, x);
+  }
+  return ans;
+}
+
+int main() {
+  int a, b;
+  while(cin >> a >> b) {
+    cout << fexp(a, b) << '\n';
+  }
+  return 0;
+}