add abc370b.rs

Author: rchaser53

src/abc/abc370b.rs

@@ -0,0 +1,32 @@
+/** THIS IS AN OUTPUT FILE. NOT EDIT THIS FILE DIRECTLY. **/
+use proconio::input;
+use proconio::marker::*;
+use std::marker::PhantomData;
+use std::cmp::*;
+use std::collections::*;
+
+fn main() {
+  input! {
+    n:usize
+  }
+
+  let mut arr = vec![];
+  for i in 0..n {
+    input! {
+      a: [Usize1;i+1]
+    }
+    arr.push(a);
+  }
+
+  let mut now = 0;
+  for i in 0..n {
+    let (ri, ci) = if now >= i {
+      (now, i)
+    } else {
+      (i, now)
+    };
+    now = arr[ri][ci];
+  }
+
+  println!("{}", now+1);
+}