'commit'

TangDou/JiShuanKe/2023-02-17/T3698.cpp

@@ -0,0 +1,22 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+const int N = 1e5 + 10;
+char a[N];
+
+int main() {
+    freopen("reverse.in", "r", stdin);
+    freopen("reverse.out", "w", stdout);
+
+    int n;
+    cin >> n;
+    for (int i = 0; i < n; i++) cin >> a[i];
+
+    for (int i = 0; i < n; i++)
+        if (i % 2 == 0)
+            cout << !(a[i] - '0');
+        else
+            cout << a[i];
+
+    return 0;
+}