제출 #682817

#제출 시각아이디문제언어결과실행 시간메모리
682817iskhakkutbilimGift (IZhO18_nicegift)C++14
0 / 100
274 ms44500 KiB
#include <bits/stdc++.h> using namespace std; #define int long long #define ff first #define ss second #define all(a) a.begin(), a.end() const int M = 1e9 + 7; const int N = 1e6 + 1; main(){ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); int n, k; cin >> n >> k; int a[n]; for(int i = 0;i < n; i++){ cin >> a[i]; } set<int> st(a, a + n); if(st.size() == 1){ if(n%k!= 0){ cout << -1; }else{ cout << n / k << '\n'; deque<int> q; for(int i = 0;i < n; i++) q.push_back(i); for(int i = 0;i < n / k; i++){ cout << a[0] << ' '; int c = k; while(c--){ cout << q.front()+1 << ' '; q.pop_front(); } cout << '\n'; } } return 0; } return 0; }

컴파일 시 표준 에러 (stderr) 메시지

nicegift.cpp:11:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main(){
      | ^~~~
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