Submission #115170

#	Time	Username	Problem	Language	Result	Execution time	Memory
115170		tinjyu	Werewolf (IOI18_werewolf)	C++14	15 / 100	4022 ms	28476 KiB

werewolf

#include "werewolf.h"
#include <iostream>
using namespace std;
long long int t[400005][3],road[200005],map[400005][2],tag[200005][2];
std::vector<int> check_validity(int n, std::vector<int> x, std::vector<int> y,std::vector<int> s, std::vector<int> e,std::vector<int> l, std::vector<int> r) {
	int q = s.size();
	int m = x.size();
	std::vector<int> a(q);
	for(int i=0;i<n;i++)road[i]=-1;
	for(int i=0;i<m;i++)
	{
		map[i*2][0]=x[i];
		map[i*2][1]=road[y[i]];
		road[y[i]]=i*2;
		map[i*2+1][0]=y[i];
		map[i*2+1][1]=road[x[i]];
		road[x[i]]=i*2+1;
	}
	int ans;
	for(int i=0;i<q;i++)
	{
		ans=0;
		for(int j=0;j<n;j++)
		{
			tag[j][0]=0;
			tag[j][1]=0;
		}
		int people=l[i],wolf=r[i],start=s[i],end=e[i];
		//cout<<start<<" "<<end<<endl;
		tag[start][0]=1;
		t[1][0]=start;
		t[1][1]=0;
		t[1][2]=-1;
		int p=1,pp=1;
		while(p<=pp)
		{
			int now=t[p][0],mode=t[p][1];
			int g=road[now];
			//cout<<now<<" "<<mode<<endl;
			if(now==45 && mode==1 && i==55)
			{
				int z=p;
				//cout<<"路"<<endl; 
				while(z!=-1)
				{
					//cout<<t[z][0]<<" "<<t[z][1]<<"  ";
					z=t[z][2];
				}
				//system("pause");
			}
			if(now<=wolf && now>=people && t[p][1]==0 && tag[now][1]==0)
			{

					pp++;
					t[pp][0]=now;
					t[pp][1]=1;
					t[pp][2]=p;
				//cout<<now<<" 1  "; 
					tag[now][1]=1;
				
			}
			while(g!=-1)
			{
				if(tag[map[g][0]][mode]==0 && ((mode==0 && map[g][0]>=people) || (mode==1 && map[g][0]<=wolf)))
				{
					pp++;
					t[pp][0]=map[g][0];
					t[pp][1]=mode;
					t[pp][2]=p;
					//cout<<map[g][0]<<" "<<mode<<"  ";
					tag[map[g][0]][mode]=1;
				}
				g=map[g][1];
			}
			//cout<<endl;
			p++;
		}
		//cout<<end<<endl;
		a[i]=tag[end][1];
	}
	return a;
}

Compilation message (stderr)

werewolf.cpp: In function 'std::vector<int> check_validity(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
werewolf.cpp:19:6: warning: variable 'ans' set but not used [-Wunused-but-set-variable]
  int ans;
      ^~~

• Subtask 1: 7 / 7
• Subtask 2: 8 / 8
• Subtask 3: 0 / 34
• Subtask 4: 0 / 51