Submission #881415

#	Time	Username	Problem	Language	Result	Execution time	Memory
881415		12345678	Carnival (CEOI14_carnival)	C++17	0 / 100	1 ms	596 KiB

carnival

#include <bits/stdc++.h>

using namespace std;

const int nx=155;
int n, res, cnt, vs[nx], ans[nx];
vector<int> d[nx];

int query(vector<int> v)
{
    printf("%d ", v.size());
    for (auto x:v) printf("%d ", x);
    printf("\n");
    scanf("%d", &res);
    return res;
}

void dfs(int u, int p)
{
    vs[u]=1;
    ans[u]=cnt;
    for (auto v:d[u]) if (v!=p) dfs(v, u);
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    for (int i=1; i<=n; i++) for (int j=i+1; j<=n; j++) if (query(vector<int> {i, j})==2) d[i].push_back(j), d[j].push_back(i);
    for (int i=1; i<=n; i++) if (!vs[i]) cnt++, dfs(i, i);
    printf("0 ");
    for (int i=1; i<=n; i++) printf("%d", ans[i]);
    return 0;
}

Compilation message (stderr)

carnival.cpp: In function 'int query(std::vector<int>)':
carnival.cpp:11:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wformat=]
   11 |     printf("%d ", v.size());
      |             ~^    ~~~~~~~~
      |              |          |
      |              int        std::vector<int>::size_type {aka long unsigned int}
      |             %ld
carnival.cpp:14:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |     scanf("%d", &res);
      |     ~~~~~^~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20