Submission #486661

#	Time	Username	Problem	Language	Result	Execution time	Memory
486661		Koosha_mv	Bosses (BOI16_bosses)	C++14	100 / 100	677 ms	836 KiB

bosses

#include <bits/stdc++.h>
using namespace std;
#define erorp(x) cout<<#x<<"={"<<(x.F)<<" , "<<x.S<<"}"<<endl
#define print(v,r) f(i,0,r) cout<<v[i]<<" "; cout<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define Add(x,y) x=(x+y)%mod
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first

const int N=10005;

int n,t,ans=N*N,a[N],dist[N];
vector<int> g[N];

void bfs(int source){
	fill(dist,dist+N,N);
	int res=0,cnt=0;
	queue<int> q;
	dist[source]=1;
	q.push(source);
	while(q.size()){
		int u=q.front();
		q.pop();
		cnt++;
		res+=dist[u];
		f(i,0,g[u].size()){
			if(dist[u]+1<dist[g[u][i]]){
				q.push(g[u][i]);
				dist[g[u][i]]=dist[u]+1;
			}
		}
	}
	if(cnt==n){
		minm(ans,res);
	}
}

int main(){
	cin>>n;
	f(i,1,n+1){
		int x,k;
		cin>>k;
		f(j,0,k){
			cin>>x;
			g[x].pb(i);
		}
	}
	f(i,1,n+1){
		bfs(i);
	}	
	cout<<ans;
}

Compilation message (stderr)

bosses.cpp: In function 'void bfs(int)':
bosses.cpp:7:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 | #define f(i,a,b) for(int i=a;i<b;i++)
......
   36 |   f(i,0,g[u].size()){
      |     ~~~~~~~~~~~~~~~            
bosses.cpp:36:3: note: in expansion of macro 'f'
   36 |   f(i,0,g[u].size()){
      |   ^

• Subtask 1: 22 / 22
• Subtask 2: 45 / 45
• Subtask 3: 33 / 33