import(life): Add chuanzhi-cup codes.

1 files changed, 48 insertions, 0 deletions

diff --git a/works/life/chuanzhi-cup/contest/4.cpp b/works/life/chuanzhi-cup/contest/4.cpp
new file mode 100644
index 0000000..da01a23
--- /dev/null
+++ b/works/life/chuanzhi-cup/contest/4.cpp
@@ -0,0 +1,48 @@
+#include <algorithm>

+#include <cstdio>

+#include <iostream>

+#include <string>

+#include <vector>

+

+int main() {

+  std::vector<std::string> files;

+  int n;

+  std::cin >> n;

+  int current_count = 0;

+  while (current_count < n) {

+    std::string command;

+    std::cin >> command;

+    char a = command[0];

+    if (a == 't') {

+      std::string file;

+      std::cin >> file;

+      auto iter = std::find(files.cbegin(), files.cend(), file);

+      if (iter == files.cend()) {

+        files.push_back(std::move(file));

+      }

+    } else if (a == 'l') {

+      for (const auto &f : files) {

+        std::cout << f << '\n';

+      }

+    } else {

+      char b = command[1];

+      if (b == 'm') {

+        std::string file;

+        auto iter = std::find(files.cbegin(), files.cend(), file);

+        if (iter != files.cend())

+          files.erase(iter);

+      } else {

+        std::string old, new_f;

+        std::cin >> old >> new_f;

+        auto iter = std::find(files.begin(), files.end(), old);

+        auto iter2 = std::find(files.begin(), files.end(), new_f);

+        if (iter != files.end() && iter2 == files.end()) {

+          *iter = std::move(new_f);

+        }

+      }

+    }

+    current_count++;

+  }

+

+  return 0;

+}