feat(codeforces): 1017

codeforces/1017/d.cc

@@ -0,0 +1,43 @@
+#include <iostream>
+
+int main() {
+  int x;
+  std::cin >> x;
+
+  while (x--) {
+    std::string p, s;
+    std::cin >> p >> s;
+
+    size_t pi = 0;
+    size_t si = 0;
+    while (pi < p.size() && si < s.size()) {
+      if (p[pi] != s[si]) {
+        break;
+      }
+
+      auto TO_MATCH = p[pi];
+
+      size_t LEFT_POS_CHANGE = 0;
+      size_t RIGHT_POST_CHANGE = 0;
+      while (p[pi] == TO_MATCH) {
+        ++LEFT_POS_CHANGE;
+        if (++pi == p.size())
+          break;
+      }
+      while (s[si] == TO_MATCH) {
+        ++RIGHT_POST_CHANGE;
+        if (++si == s.size())
+          break;
+      }
+      // clamp delta
+      if (RIGHT_POST_CHANGE < LEFT_POS_CHANGE ||
+          RIGHT_POST_CHANGE > 2 * LEFT_POS_CHANGE) {
+        break;
+      }
+    }
+
+    std::cout << (pi == p.size() && si == s.size() ? "YES\n" : "NO\n");
+  }
+
+  return 0;
+}