'commit'

TangDou/LanQiaoBei/LanQiao13STEMA202210/3.cpp

@@ -0,0 +1,26 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+const int N = 2000;
+/*
+4
+-1 3 5 3
+3
+*/
+int a[N];
+int k, n, x;
+int main() {
+    cin >> n;
+    for (int i = 1; i <= n; i++) cin >> a[i];
+    cin >> x;
+    for (int i = 1; i <= n; i++) {
+        if (a[i] == x) {
+            k = i;
+            printf("%d", k);
+            break;
+        }
+    }
+    if (k == 0)
+        printf("-1");
+    return 0;
+}