oj.uz

Submission #30721

# Submission time Handle Problem Language Result Execution time Memory
30721 2017-07-26T09:15:05 Z RayaBurong25_1 Bosses (BOI16_bosses) C++14
100 / 100
 723 ms 2224 KB 
#include <stdio.h>
#include <vector>
#include <queue>
#define INF 1000000000
std::vector<int> AdjList[5005];
int min(int a, int b)
{
    return (a < b)?a:b;
}
int Vis[5005];
int cnt, sz;
int sum;
std::queue<int> Q;
int H[5005];
int N;
void BFS(int u)
{
    // printf("DFS %d %d\n", u, pa);
    int i;
    for (i = 1; i <= N; i++)
        H[i] = INF;
    Q.push(u);
    H[u] = 1;
    sum += H[u];
    sz++;
    int p;
    int v, s;
    while (!Q.empty())
    {
        p = Q.front();
        Q.pop();
        s = AdjList[p].size();
        for (i = 0; i < s; i++)
        {
            v = AdjList[p][i];
            if (H[v] == INF)
            {
                Q.push(v);
                H[v] = H[p] + 1;
                sum += H[v];
                sz++;
            }
        }
    }
}
int main()
{
    scanf("%d", &N);
    int i, j, K;
    int p;
    for (i = 1; i <= N; i++)
    {
        scanf("%d", &K);
        for (j = 0; j < K; j++)
        {
            scanf("%d", &p);
            AdjList[p].push_back(i);
        }
    }
    int Ans = INF;
    // int r;
    for (i = 1; i <= N; i++)
    {
        // printf("Root %d\n", i);
        cnt++;
        sz = 0;
        sum = 0;
        BFS(i);
        // printf("%lld\n", sum);
        if (sz == N)
            Ans = min(Ans, sum);
    }
    printf("%d", Ans);
}

Compilation message

bosses.cpp: In function 'int main()':
bosses.cpp:48:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
                    ^
bosses.cpp:53:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &K);
                        ^
bosses.cpp:56:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &p);
                            ^

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2092 KB Output is correct
2 Correct 0 ms 2092 KB Output is correct
3 Correct 0 ms 2092 KB Output is correct
4 Correct 0 ms 2092 KB Output is correct
5 Correct 0 ms 2092 KB Output is correct
6 Correct 0 ms 2092 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2092 KB Output is correct
2 Correct 0 ms 2092 KB Output is correct
3 Correct 0 ms 2092 KB Output is correct
4 Correct 0 ms 2092 KB Output is correct
5 Correct 0 ms 2092 KB Output is correct
6 Correct 0 ms 2092 KB Output is correct
7 Correct 0 ms 2092 KB Output is correct
8 Correct 0 ms 2092 KB Output is correct
9 Correct 0 ms 2092 KB Output is correct
10 Correct 0 ms 2092 KB Output is correct
11 Correct 0 ms 2092 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2092 KB Output is correct
2 Correct 0 ms 2092 KB Output is correct
3 Correct 0 ms 2092 KB Output is correct
4 Correct 0 ms 2092 KB Output is correct
5 Correct 0 ms 2092 KB Output is correct
6 Correct 0 ms 2092 KB Output is correct
7 Correct 0 ms 2092 KB Output is correct
8 Correct 0 ms 2092 KB Output is correct
9 Correct 0 ms 2092 KB Output is correct
10 Correct 0 ms 2092 KB Output is correct
11 Correct 0 ms 2092 KB Output is correct
12 Correct 6 ms 2224 KB Output is correct
13 Correct 3 ms 2224 KB Output is correct
14 Correct 173 ms 2224 KB Output is correct
15 Correct 13 ms 2224 KB Output is correct
16 Correct 696 ms 2224 KB Output is correct
17 Correct 723 ms 2224 KB Output is correct
18 Correct 719 ms 2224 KB Output is correct