Submission #815868

#	Time	Username	Problem	Language	Result	Execution time	Memory
815868		Pikachu	Carnival (CEOI14_carnival)	C++17	20 / 100	77 ms	316 KiB

carnival

#include <bits/stdc++.h>

using namespace std;

template<typename T>
inline bool maxi(T &x, const T &val)
{
    if (x < val) return x = val, true;
    return false;
}

template<typename T>
inline bool mini(T &x, const T &val)
{
    if (x > val) return x = val, true;
    return false;
}

const int maxn = 155;
int n;
int ans[maxn];
int par[maxn];

int findpar(int x)
{
    if (par[x]) return par[x] = findpar(par[x]);
    return x;
}

void unite(int u, int v)
{
    u = findpar(u);
    v = findpar(v);
    if (u != v) par[u] = v;
}

int getInt()
{
    int tmp;
    cin >> tmp;
    return tmp;
}

void solve()
{
    cin >> n;
    for (int i = 1; i <= n; i++) {
        for (int j = i + 1; j <= n; j++) {
            cout << 2 << ' ' << i << ' ' << j << endl;
            if (getInt() == 1) unite(i, j);
        }
    }
    int cnt = 0;
    for (int i = 1; i <= n; i++) {
        int x = findpar(i);
        if (ans[x]) ans[i] = ans[x];
        else {
            ans[i] = ans[x] = ++cnt;
        }
    }
    cout << "0 ";
    for (int i = 1; i <= n; i++) cout << ans[i] << ' ';
    cout << endl;
}

signed main()
{
#ifdef LOCAL
    clock_t st = clock();
#endif
    ios_base::sync_with_stdio(false);
    cin.tie(0);

#define Task ""
#ifdef LOCAL
    if (!fopen("D:\\.inp", "r")) {
        freopen("D:\\.inp", "w", stdout);
        freopen("D:\\.out", "w", stdout);
        cerr << "get input from file\n";
        return 0;
    }
    freopen("D:\\.inp", "r", stdin);
    freopen("D:\\.out", "w", stdout);
#else
    if (fopen(Task".inp", "r")) {
        freopen(Task".inp", "r", stdin);
        freopen(Task".out", "w", stdout);
    }
#endif

    solve();

#ifdef LOCAL
    cerr << clock() - st << endl;
#endif
}   

Compilation message (stderr)

carnival.cpp: In function 'int main()':
carnival.cpp:86:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   86 |         freopen(Task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
carnival.cpp:87:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   87 |         freopen(Task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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