Submission #552796

#	Time	Username	Problem	Language	Result	Execution time	Memory
552796		Killer2501	Carnival (CEOI14_carnival)	C++14	100 / 100	13 ms	336 KiB

carnival

#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define ull unsigned long long
#define pb push_back
#define pll pair<int, pii>
#define pii pair<int, int>
#define fi first
#define se second
using namespace std;
const int N = 2e2+2;
const int M = 60;
const int mod = 1e9+7;
const ll base = 1e6;
const ll inf = 1e9;
int n, m, b[N], a[N], k, t, d[N], cnt, par[N], f[N];
ll ans;
vector<int> adj[N], vi;
bool vis[N], ok;
set<pii> leaf;
int ask()
{
    if(vi.size() == 1)return 1;
    cout << vi.size() << " ";
    for(int x: vi)cout << x <<" ";
    cout << endl;
    cin >> k;
    return k;
}
void sol()
{
    cin >> n;
    b[1] = 1;
    a[1] = 1;
    m = 1;
    for(int i = 2; i <= n; i ++)
    {
        vi.clear();
        for(int j = 1; j <= i; j ++)vi.pb(j);
        b[i] = ask();
        if(b[i] > m)
        {
            a[i] = ++m;
            continue;
        }
        int l = 1, r = i-1, mid;
        while(l <= r)
        {
            mid = (l+r)>>1;
            vi.clear();
            for(int j = 1; j <= mid; j ++)vi.pb(j);
            vi.pb(i);
            if(ask() > b[mid])l = mid+1;
            else r = mid-1;
        }
        a[i] = a[l];
    }
    cout << 0 <<" ";
    for(int i = 1; i <= n; i ++)cout << a[i] <<" ";
    cout << endl;
}
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    #define task "tests"
    if(fopen(task".inp", "r"))
	{
		freopen(task".inp", "r", stdin);
		freopen(task".out", "w", stdout);
	}
    int test = 1;
    //cin >> test;
    while(test -- > 0)sol();
    return 0;
}
/*
2 1 6 5 4 3
*/

Compilation message (stderr)

carnival.cpp: In function 'int main()':
carnival.cpp:70:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |   freopen(task".inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
carnival.cpp:71:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   71 |   freopen(task".out", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20