oj.uz

Submission #234989

# Submission time Handle Problem Language Result Execution time Memory
234989 2020-05-26T14:50:50 Z BamiTorabi Bosses (BOI16_bosses) C++14
100 / 100
 714 ms 760 KB 
//Sasayego! Sasayego! Shinzou wo Sasageyo!

#include <iostream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <ctime>
#include <cstring>
#include <vector>
#include <set>
#include <map>
#include <stack>
#include <queue>
#include <deque>
#include <numeric>
#include <bitset>
#include <ctime>
#define debug(x)  cerr << #x << " = " << x << endl
#define lid (id << 1)
#define rid (lid ^ 1)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair <ll, ll> pll;
typedef pair <int, int> pii;

const int maxN = 5e3 + 5;
const ll INF = 1e18;
const ll MOD = 1e9 + 7;

int n, dis[maxN];
queue <int> Q;
vector <int> G[maxN];

ll BFS(int st){
	memset(dis, 63, sizeof dis);
	dis[st] = 1;
	Q.push(st);
	while (!Q.empty()){
		int v = Q.front();
		Q.pop();
		for (int u : G[v])
			if (dis[u] > dis[v] + 1){
				dis[u] = dis[v] + 1;
				Q.push(u);
			}
	}
	ll res = 0;
	for (int i = 1; i <= n; i++)
		res += dis[i];
	return res;
}

int main(){
	time_t START = clock();
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	scanf("%d", &n);
	for (int i = 1; i <= n; i++){
		int k; scanf("%d", &k);
		while (k--){
			int u; scanf("%d", &u);
			G[u].push_back(i);
		}
	}
	ll ans = INF;
	for (int i = 1; i <= n; i++)
		ans = min(ans, BFS(i));
	printf("%lld\n", ans);
	time_t FINISH = clock();
	cerr << "Execution time: " << (ld)(FINISH - START) / CLOCKS_PER_SEC * 1000.0 << " milliseconds.\n";
	return 0;
}

Compilation message

bosses.cpp: In function 'int main()':
bosses.cpp:57:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
bosses.cpp:59:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int k; scanf("%d", &k);
          ~~~~~^~~~~~~~~~
bosses.cpp:61:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    int u; scanf("%d", &u);
           ~~~~~^~~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 5 ms 512 KB Output is correct
6 Correct 5 ms 512 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 5 ms 512 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 512 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 5 ms 512 KB Output is correct
11 Correct 5 ms 512 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 5 ms 512 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 5 ms 512 KB Output is correct
8 Correct 5 ms 512 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 5 ms 512 KB Output is correct
11 Correct 5 ms 512 KB Output is correct
12 Correct 10 ms 512 KB Output is correct
13 Correct 8 ms 640 KB Output is correct
14 Correct 144 ms 632 KB Output is correct
15 Correct 25 ms 512 KB Output is correct
16 Correct 562 ms 760 KB Output is correct
17 Correct 714 ms 680 KB Output is correct
18 Correct 701 ms 680 KB Output is correct