Submission #1111362

#	Time	Username	Problem	Language	Result	Execution time	Memory
1111362		DuongKiet	Teams (CEOI11_tea)	C++17	0 / 100	209 ms	23152 KiB

tea

#include <bits/stdc++.h>
#define N 1000005
#define inf 1e18
#define ll long long
#define ii pair <int, int>
#define pb push_back
#define all(x) x.begin(), x.end()
#define fi first
#define se second
#define SZ(x) (int) x.size()

const long long Mod = 1e9 + 7;

using namespace std;

int n;
struct cauthu{
    int c, id;
}a[N];
struct slteam{
    int c, id;
};
struct cmp{
    bool operator()(slteam &a, slteam &b){
        return a.c > b.c;
    }
};
void init(){

    cin >> n;
    for (int i = 1; i <= n; i++){
        cin >> a[i].c;
        a[i].id = i;
    }
    sort(a + 1, a + 1 + n, [&](cauthu a, cauthu b){
            if (a.c == b.c) return a.id > b.id;
            return a.c > b.c;
        });
    vector <vector<int> > team;
    vector <int> maketeam;
    int cur = -1;
    for (int i = 1; i <= n; i++){
        if (cur == -1){
            cur = a[i].c - 1;
            maketeam.pb(a[i].id);
            continue;
        }
        if (cur > 0){
            cur--;
            maketeam.pb(a[i].id);
        }else{
            cur = a[i].c - 1;
            team.pb(maketeam);
            maketeam.clear();
            maketeam.pb(a[i].id);
        }
    }
//    if (cur > 0){
//
//        priority_queue<slteam, vector <slteam>, cmp> q;
//        for (int i = 0; i < SZ(team); i++)
//            q.push({SZ(team[i]), i});
//
//        sort(all(maketeam), [&](int u, int v){return a[u].c < a[v].c;});
//
//        while (a[maketeam.back()].c > SZ(maketeam) && !maketeam.empty()){
//            slteam k = q.top();
//            team[k.id].pb(maketeam.back());
//            maketeam.pop_back();
//            if (maketeam.empty()) break;
//        }
//        if (!maketeam.empty()) team.pb(maketeam);
////        cout << "YES";
////        cout << maketeam.back();
//    }
//    else 
    if (!maketeam.empty()) team.pb(maketeam);
    cout << team.size() << '\n';
    for (vector <int> cur: team){
        cout << cur.size() << ' ';
        for (int x: cur)
            cout << x << " ";
        cout << '\n';
    }
}
signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);cout.tie(0);
    #define task "task"
    if (fopen(task".inp", "r")){
        freopen(task".inp","r",stdin);
        freopen(task".out","w",stdout);
    }
    init();
    return 0;
}

Compilation message (stderr)

tea.cpp: In function 'int main()':
tea.cpp:92:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   92 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
tea.cpp:93:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   93 |         freopen(task".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• 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