제출 #1257365

#제출 시각아이디문제언어결과실행 시간메모리
1257365knhatdevDrvca (COCI19_drvca)C++20
0 / 110
28 ms3136 KiB
#include<bits/stdc++.h> #define int long long #define ii pair<int,int> #define fi first #define se second #define task "noel" using namespace std; const int N = 1e6 + 5, mod = 1e9 + 7; int n, a[N]; void check1() { int d = a[2] - a[1]; vector<int> v, v2; v.push_back(a[1]); for(int i = 2; i <= n; i++) { if(a[i] - v.back() == d) { v.push_back(a[i]); } else { v2.push_back(a[i]); } } if(v2.size() == 0) { cout << v.size() - 1 << '\n'; for(int i = 0; i < v.size() - 1; i++) cout << v[i] << ' '; cout << '\n'; cout << 1 << '\n'; cout << v.back(); exit(0); } if(v2.size() >= 2) { for(int i = 1; i < v2.size(); i++) if(v2[i] - v2[i - 1] != v2[1] - v2[0]) return; } cout << v.size() << '\n'; for(int x : v) cout << x << ' '; cout << '\n' << v2.size() << '\n'; for(int x : v2) cout << x << ' '; exit(0); } void check2() { int d = a[3] - a[1]; vector<int> v, v2; v.push_back(a[1]); for(int i = 2; i <= n; i++) { if(a[i] - v.back() == d) { v.push_back(a[i]); } else { v2.push_back(a[i]); } } if(v2.size() == 0) { cout << v.size() - 1 << '\n'; for(int i = 0; i < v.size() - 1; i++) cout << v[i] << ' '; cout << '\n'; cout << 1 << '\n'; cout << v.back(); exit(0); } if(v2.size() >= 2) { for(int i = 1; i < v2.size(); i++) if(v2[i] - v2[i - 1] != v2[1] - v2[0]) return; } cout << v.size() << '\n'; for(int x : v) cout << x << ' '; cout << '\n' << v2.size() << '\n'; for(int x : v2) cout << x << ' '; exit(0); } main(){ ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); if(fopen(task ".inp", "r")){ freopen(task ".inp", "r", stdin); freopen(task ".out", "w", stdout); } cin >> n; for(int i = 1; i <= n; i++) cin >> a[i]; sort(a + 1, a + 1 + n); if(n == 2) { cout << 1 << '\n' << a[1] << '\n' << 1 << '\n' << a[2]; exit(0); } if(n <= 4) { cout << 2 << '\n'; for(int i = 1; i <= 2; i++) cout << a[i] << ' '; cout << '\n'; cout << n - 2 << '\n'; for(int i = 3; i <= n; i++) cout << a[i] << ' '; exit(0); } check1(); check2(); cout << -1 << '\n'; }

컴파일 시 표준 에러 (stderr) 메시지

drvca.cpp:87:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   87 | main(){
      | ^~~~
drvca.cpp: In function 'int main()':
drvca.cpp:90:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   90 |         freopen(task ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
drvca.cpp:91:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   91 |         freopen(task ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
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