제출 #648667

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
648667		messiuuuuu	Teams (CEOI11_tea)	C++14	0 / 100	181 ms	28412 KiB

tea

///
#include<bits/stdc++.h>
#define task "C"
#define ll long long
#define ld long double
#define fi first
#define se second
#define pb push_back
using namespace std;
const int MAXN = 1e6 + 5;
const ll INF = 1e18 + 5;

int n, a[MAXN];

void Input()
{
    cin >> n;
    for (int i = 1; i <= n; i++)
        cin >> a[i];
}

int cs[MAXN];

void Solve()
{
    iota(cs + 1, cs + n + 1, 1);
    sort(cs + 1, cs + n + 1, [](int i, int j)
         {
             return a[i] < a[j];
         });
    int i = n;
    vector<vector<int>> ans;
    while (i >= 1)
    {
        vector<int> newa;
        int j = i - a[cs[i]];
        assert(j >= 0);
        for (; i > j; i--)
            newa.pb(cs[i]);
        ans.pb(newa);
    }
    cout << ans.size() << '\n';
    for (auto& vc : ans)
    {
        cout << vc.size() << ' ';
        for (int i : vc)
            cout << i << ' ';
        cout << '\n';
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    if (fopen(task".INP","r"))
    {
        freopen(task".INP","r",stdin);
        //freopen(task".OUT","w",stdout);
    }
    Input();
    Solve();
}

컴파일 시 표준 에러 (stderr) 메시지

tea.cpp: In function 'int main()':
tea.cpp:58:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   58 |         freopen(task".INP","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10