1 files changed, 25 insertions, 0 deletions
diff --git a/2020/01/part1.f90 b/2020/01/part1.f90
new file mode 100644
index 0000000..a7c09c8
--- /dev/null
+++ b/2020/01/part1.f90
@@ -0,0 +1,25 @@
+program day1
+    implicit none
+
+    integer, parameter :: input_len = 200
+    integer, parameter :: search = 2020
+
+    integer :: i, j
+    integer, dimension(input_len) :: input
+
+    open(10, file='input', status='old')
+    do i = 1, input_len
+        read(10, *) input(i)
+    end do
+    close(10)
+
+    do i = 1, input_len
+        do j = 1, input_len
+            if (input(i) + input(j) == search) then
+                print *, input(i) * input(j)
+                stop
+            end if
+        end do
+    end do
+
+end program day1