oj.uz

Submission #53620

# Submission time Handle Problem Language Result Execution time Memory
53620 2018-06-30T14:21:33 Z ruhanhabib39 Bosses (BOI16_bosses) C++17
67 / 100
 1500 ms 1680 KB 
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 5000;

int N;
vector<int> par[MAXN + 10];
vector<int> child[MAXN + 10];
int done[MAXN + 10];
vector<int> nxt[MAXN + 10];
int salary[MAXN + 10];

int calc(int u) {
   int ss = 0;
   for(int v : nxt[u]) ss += calc(v);
   salary[u] = 1;
   for(int v : nxt[u]) salary[u] += salary[v];
   return ss + salary[u];
}

int work(int root) {
   queue<int> q; q.push(root);
   fill(nxt, nxt + N + 1, vector<int>());
   done[root] = root;
   while(!q.empty()) {
      int u = q.front(); q.pop();
      for(int v : child[u]) {
         if(done[v] == root) continue;
         done[v] = root;
         nxt[u].push_back(v);
         q.push(v);
      }
   }
   for(int u = 1; u <= N; u++) {
      if(done[u] != root) return 1e9;
   }
   return calc(root);
}

int main() {
   scanf("%d", &N);
   for(int u = 1; u <= N; u++) {
      int sz; scanf("%d", &sz);
      par[u].resize(sz);
      for(int& p : par[u]) {
         scanf("%d", &p);
         child[p].push_back(u);
      }
   }
   int res = 1e9;
   for(int u = 1; u <= N; u++) res = min(res, work(u));
   printf("%d\n", res);
}

Compilation message

bosses.cpp: In function 'int main()':
bosses.cpp:41:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d", &N);
    ~~~~~^~~~~~~~~~
bosses.cpp:43:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
       int sz; scanf("%d", &sz);
               ~~~~~^~~~~~~~~~~
bosses.cpp:46:15: 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 2 ms 632 KB Output is correct
2 Correct 2 ms 752 KB Output is correct
3 Correct 3 ms 948 KB Output is correct
4 Correct 3 ms 948 KB Output is correct
5 Correct 3 ms 948 KB Output is correct
6 Correct 3 ms 948 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 632 KB Output is correct
2 Correct 2 ms 752 KB Output is correct
3 Correct 3 ms 948 KB Output is correct
4 Correct 3 ms 948 KB Output is correct
5 Correct 3 ms 948 KB Output is correct
6 Correct 3 ms 948 KB Output is correct
7 Correct 4 ms 948 KB Output is correct
8 Correct 3 ms 948 KB Output is correct
9 Correct 3 ms 948 KB Output is correct
10 Correct 4 ms 948 KB Output is correct
11 Correct 3 ms 948 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 632 KB Output is correct
2 Correct 2 ms 752 KB Output is correct
3 Correct 3 ms 948 KB Output is correct
4 Correct 3 ms 948 KB Output is correct
5 Correct 3 ms 948 KB Output is correct
6 Correct 3 ms 948 KB Output is correct
7 Correct 4 ms 948 KB Output is correct
8 Correct 3 ms 948 KB Output is correct
9 Correct 3 ms 948 KB Output is correct
10 Correct 4 ms 948 KB Output is correct
11 Correct 3 ms 948 KB Output is correct
12 Correct 14 ms 1124 KB Output is correct
13 Correct 11 ms 1184 KB Output is correct
14 Correct 383 ms 1648 KB Output is correct
15 Correct 163 ms 1648 KB Output is correct
16 Correct 936 ms 1680 KB Output is correct
17 Execution timed out 1567 ms 1680 KB Time limit exceeded
18 Halted 0 ms 0 KB -