Submission #486303

#	Time	Username	Problem	Language	Result	Execution time	Memory
486303		Koosha_mv	Political Development (BOI17_politicaldevelopment)	C++14	4 / 100	598 ms	28096 KiB

politicaldevelopment

#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=1e6+99,K=15;

int n,k,ans,a[N],mark[N],deg[N],fb[(1<<K)],dp[(1<<K)],adj[K];
vector<int> v,g[N];

void make(){
	f(i,0,n){
		vector<int> v;
		f(j,0,g[i].size()){
			if(mark[i]<mark[g[i][j]]){
				v.pb(g[i][j]);
			}
		}
		g[i]=v;
	}
	f(mask,1,(1<<K)){
		f(i,0,K){
			if(mask&(1<<i)){
				fb[mask]=i;
			}
		}
	}
	fill(mark,mark+N,-1);
}
void max_ind(int n){
	dp[0]=1;
	f(mask,1,(1<<n)){
		int u=fb[mask];
		dp[mask]=(dp[mask^(1<<u)] && (adj[u]&mask)==0);
		if(dp[mask]){
			maxm(ans,nb(mask));
		}
	}
}
void solve(vector<int> v){
	fill(mark,mark+N,-1);
	f(i,0,K){
		adj[i]=0;
	}
	f(i,0,v.size()){
		mark[v[i]]=i;
	}
	f(i,0,v.size()){
		int u=v[i];
		f(j,0,g[u].size()){
			if(mark[g[u][j]]!=-1){
				int _u=mark[u],_v=mark[g[u][j]];
				adj[_u]^=(1<<_v);
				adj[_v]^=(1<<_u);
			}
		}
	}
	max_ind(v.size());
	f(i,0,v.size()){
		mark[v[i]]=-1;
	}
}

int main(){
	cin>>n>>k;
	f(i,0,n){
		int t,x;
		cin>>deg[i];
		f(j,0,deg[i]){
			cin>>x;
			g[i].pb(x);
		}
	}
	f(i,0,n){
		if(deg[i]<k){
			v.pb(i);
		}
	}
	f(i,0,v.size()){
		int u=v[i];
		mark[u]=i;
		f(j,0,g[u].size()){
			if(--deg[g[u][j]]==k-1){
				v.pb(g[u][j]);
			}
		}
	}
	make();
	f(t,0,v.size()){
		int u=v[t];
		solve(g[u]);
	}
	cout<<ans+1;
}

Compilation message (stderr)

politicaldevelopment.cpp: In function 'void make()':
politicaldevelopment.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++)
......
   28 |   f(j,0,g[i].size()){
      |     ~~~~~~~~~~~~~~~            
politicaldevelopment.cpp:28:3: note: in expansion of macro 'f'
   28 |   f(j,0,g[i].size()){
      |   ^
politicaldevelopment.cpp: In function 'void solve(std::vector<int>)':
politicaldevelopment.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++)
......
   59 |  f(i,0,v.size()){
      |    ~~~~~~~~~~~~                
politicaldevelopment.cpp:59:2: note: in expansion of macro 'f'
   59 |  f(i,0,v.size()){
      |  ^
politicaldevelopment.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++)
......
   62 |  f(i,0,v.size()){
      |    ~~~~~~~~~~~~                
politicaldevelopment.cpp:62:2: note: in expansion of macro 'f'
   62 |  f(i,0,v.size()){
      |  ^
politicaldevelopment.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++)
......
   64 |   f(j,0,g[u].size()){
      |     ~~~~~~~~~~~~~~~            
politicaldevelopment.cpp:64:3: note: in expansion of macro 'f'
   64 |   f(j,0,g[u].size()){
      |   ^
politicaldevelopment.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++)
......
   73 |  f(i,0,v.size()){
      |    ~~~~~~~~~~~~                
politicaldevelopment.cpp:73:2: note: in expansion of macro 'f'
   73 |  f(i,0,v.size()){
      |  ^
politicaldevelopment.cpp: In function 'int main()':
politicaldevelopment.cpp:81:7: warning: unused variable 't' [-Wunused-variable]
   81 |   int t,x;
      |       ^
politicaldevelopment.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++)
......
   93 |  f(i,0,v.size()){
      |    ~~~~~~~~~~~~                
politicaldevelopment.cpp:93:2: note: in expansion of macro 'f'
   93 |  f(i,0,v.size()){
      |  ^
politicaldevelopment.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++)
......
   96 |   f(j,0,g[u].size()){
      |     ~~~~~~~~~~~~~~~            
politicaldevelopment.cpp:96:3: note: in expansion of macro 'f'
   96 |   f(j,0,g[u].size()){
      |   ^
politicaldevelopment.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++)
......
  103 |  f(t,0,v.size()){
      |    ~~~~~~~~~~~~                
politicaldevelopment.cpp:103:2: note: in expansion of macro 'f'
  103 |  f(t,0,v.size()){
      |  ^

• Subtask 1: 4 / 4
• Subtask 2: 0 / 12
• Subtask 3: 0 / 23
• Subtask 4: 0 / 38
• Subtask 5: 0 / 23