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mirror of https://git.sb/baoshuo/OI-codes.git synced 2024-11-09 01:18:47 +00:00
OI-codes/Luogu/CF25B/CF25B.cpp

21 lines
421 B
C++

#include <bits/stdc++.h>
using namespace std;
int main() {
int n;
string s;
cin >> n >> s;
for (int i = 0; i < n; i++) {
cout << s[i];
if (i % 2 && n % 2 && i < n - 4 || i % 2 && !(n % 2) && i != n - 1) {
cout << '-';
}
if (i == n - 4 && n % 2) {
cout << '-' << s[n - 3] << s[n - 2] << s[n - 1];
break;
}
}
return 0;
}