feat(codeforces/2067C): add new problem implementation

Author: lzwjava

codeforces/2067C/in.txt

@@ -0,0 +1,17 @@
+16
+51
+60
+61
+777
+12345689
+1000000000
+2002
+3001
+977
+989898986
+80
+800001
+96
+70
+15
+90

codeforces/2067C/main.cpp

@@ -0,0 +1,33 @@
+#include <iostream>
+#include <string>
+#include <algorithm>
+#include <fstream>
+
+using namespace std;
+
+int main() {
+  ifstream cin("in.txt");
+  int t;
+  cin >> t;
+  while (t--) {
+    int n;
+    cin >> n;
+    int ans = 0;
+    string s = to_string(n);
+    bool hasSeven = false;
+    for (char c : s) {
+      if (c == '7') {
+        hasSeven = true;
+        break;
+      }
+    }
+    if (hasSeven) {
+      cout << 0 << endl;
+      continue;
+    }
+
+    ans = 1;
+    cout << 1 << endl;
+  }
+  return 0;
+}