08-25-2025

Luogu/CodeOverclock/P1059 [NOIP 2006 普及组] 明明的随机数.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+#include <set>
+using namespace std;
+int main(){
+	set<int> s;
+	int n;
+	cin >> n;
+	int tmp;
+	for(int i = 0; i < n; i++){
+		cin >> tmp;
+		s.emplace(tmp);
+	}
+	cout << s.size() << endl;
+	for(auto it = s.begin(); it != s.end(); it++){
+		cout << *it << " ";
+	}
+	cout << endl;
+	return 0;
+}

Luogu/P1150 Peter 的烟.cpp

@@ -4,14 +4,11 @@ int main(){
 	int n, k;
 	cin >> n >> k;
 	int tmp = n;
-	int js=n;
-	while(tmp>k){
-		js+=int(tmp/k);
-		tmp=tmp%k+tmp/k;
+	int js = 0;
+	while(tmp >= k){
+		tmp = tmp - k + 1;
+		js++; 
 	}
-	cout<<js<<endl;
+	cout << n + js << endl;
 	return 0;
 }
-
-/* 4%3=1   5%3=2 2+int(5/3)=3 3%3=0
-	6%4=2 2+6/4=3*/

Luogu/P3370 【模板】字符串哈希.cpp

@@ -0,0 +1,14 @@
+#include <iostream>
+#include <unordered_set>
+using namespace std;
+int main() {
+	unordered_set<string> a;
+	int n;
+	cin >> n;
+	string x;
+	for(int i = 0; i < n; i++){
+		cin >> x;
+		a.emplace(x);
+	}
+	cout << a.size() << endl;
+}