08-14-25

Luogu/P1012 [NOIP 1998 提高组] 拼数.cpp

@@ -1,31 +1,27 @@
-#include <cstring>
 #include <iostream>
+#include <set>
+#include <string>
 using namespace std;
+
+struct cmp{
+	bool operator()(const string& a, const string& b){
+		return a + b > b + a;
+	}
+};
+
 int main(){
-	char a[21][11];
-	char sum[220]="";
+	set<string, cmp> a;
 	int n;
-	cin>>n;
-	
-	for(int i=0;i<n;i++){
-		cin>>a[i];
+	cin >> n;
+	string tmp;
+	for(int i = 0;i < n; i++){
+		cin >> tmp;
+		a.emplace(tmp);
 	}
-	int js=1;
-	char tmp[11]="";
-	while(js!=0){
-		js=0;
-		for(int i=0;i<n-1;i++){
-			if(strcmp(a[i],a[i+1])<0){
-				strcpy(tmp,a[i+1]);	
-				strcpy(a[i+1],a[i]);
-				strcpy(a[i],tmp);
-				js++;
-			}
-		}
+	for(string x : a){
+		cout << x ;
 	}
-	for(int i=0;i<n;i++){
-		strcat(sum,a[i]);
-	}
-	cout<<sum<<endl;
+	cout << endl;
 	return 0;
 }
+