1154 Vertex Coloring

题目前半略

Sample Input:

10 11
8 7
6 8
4 5
8 4
8 1
1 2
1 4
9 8
9 1
1 0
2 4
4
0 1 0 1 4 1 0 1 3 0
0 1 0 1 4 1 0 1 0 0
8 1 0 1 4 1 0 5 3 0
1 2 3 4 5 6 7 8 8 9

Sample Output:

4-coloring
No
6-coloring
No

#include<stdio.h>
#include<vector>
#include<algorithm>
#include<set> 
using namespace std;

vector<int> seq[10005];
int potid[10005];
set<int> special;
int main()
{
    int vnum;
    int edgenum;
    scanf("%d %d",&vnum,&edgenum);
    for(int i=0;i<edgenum;i++)
    {
        int id1;
        int id2;
        scanf("%d %d",&id1,&id2);
        seq[id1].push_back(id2);
        seq[id2].push_back(id1);
    }
    int testnum;
    scanf("%d",&testnum);
    for(int i=0;i<testnum;i++)
    {
        fill(potid,potid+10005,0);
        special.clear();
        int count=0;
        bool flag=false;
        for(int j=0;j<vnum;j++)
        {
            int temp;
            scanf("%d",&temp);
            special.insert(temp);
            
            potid[j]=temp;
        }
        count=special.size();
        for(int t=0;t<vnum;t++)
        {
            for(int x=0;x<seq[t].size();x++)
            {
                if(potid[seq[t][x]]==potid[t]) flag=true;
            }
        }
        if(flag==true) printf("No");
        else printf("%d-coloring",count);
        if(i!=testnum-1) printf("\n");
    
    }
}