11060 - Beverages

[brianfry713]

Next time post in the existing thread.
Read this thread.

[moudud99]

can anyone help me to find my problem?I used a toposort.
thanks in advance.

Code: Select all

#include<iostream>
#include<cmath>
#include<string>
#include<algorithm>
#include<cstdio>
#include<cstring>
#include<vector>
#include<stack>
#include<queue>
#include<map>
#define FRU freopen("out.txt","w",stdout)
#define FRO freopen("in.txt","r",stdin)
#define pb push_back
//const int row[]={-1, -1, -1,  0,  0,  1,  1,  1};  // Kings Move
//const int col[]={-1,  0,  1, -1,  1, -1,  0,  1};  // Kings Move
//const int row[]={-2, -2, -1, -1,  1,  1,  2,  2};  // Knights Move
//const int col[]={-1,  1, -2,  2, -2,  2, -1,  1};  // Knights Move
//const int row[]={-1,0,0,1,0};
//const int col[]={0,-1,1,0,0};


using namespace std;
vector<string> modd,ans;
map<string,int>mmp;
vector<int>edge[1001],ans1;
bool vis[1001];
map<int,string>mmp1;
int blah,cnt;

void dfs(int sou)
{
    vis[sou]=1;
    cnt++;

    for(int i=0; i<edge[sou].size(); i++)
    {
        int v=edge[sou][i];
        if(vis[v]==0)dfs(v);
    }
    ans1.pb(sou);
}
int main()
{
//FRO;
//FRU;
//std::ios_base::sync_with_stdio(false);
    int a,b,c,i,j,k,tc,t=0;
    int n,m,cnt=0;
    string s,s1,s2;
    while(scanf("%d",&n)!=EOF)
    {
        if(t!=0)printf("\n");
        for(i=0;i<101;i++)edge[i].clear();
        modd.clear();
        ans.clear();
        mmp1.clear();
        mmp.clear();
        ans1.clear();
        for(i=0; i<n; i++)
        {
            cin>>s;
            modd.pb(s);
            mmp[s]=i+1;
            mmp1[i+1]=s;
        }
        scanf("%d",&m);
        for(i=0; i<m; i++)
        {
            cin>>s>>s1;
            int tmp=mmp[s],tmp1=mmp[s1];
            edge[tmp1].pb(tmp);
        }
        memset(vis,0,sizeof vis);
        blah=0;
        for(i=0; i<n; i++)
        {
            if(vis[i+1]==0)
            {
                cnt=0;
                dfs(i+1);
            }
        }
        printf("Case #%d: Dilbert should drink beverages in this order:",++t);
        for(i=0; i<n; i++)cout<<" "<<mmp1[ans1[i]];
        printf(".\n");
    }

    return 0;
}

[lighted]

Your output doesn't match 3rd case. Read this thread

[damien_g]

That's a pretty cool but obscure problem.

If you don't understand the mystic "In the case there is no relation between two beverages" part, check lighted's answer on page 5 here, it explains what you have to do. It's a simple topological sort problem in fact.

The statement should be better explain, I spent far too much time on this one compared to its real difficulty.

[MNT.95]

wrong output for the third sample case
Note: I'm changing the strings with numbers starting from 0 then I'm doing normal dfs. so the case of not being relations between drinks are handled

Code: Select all

#include<map>
#include<deque>
#include<queue>
#include<stack>
#include<sstream>
#include<iostream>
#include<cstdio>
#include<cmath>
#include<algorithm>
#include<stdlib.h>
#include<vector>
#include<set>
#include<list>
#include<climits>
#include<bitset>
#include<iterator>
#include<string.h>
#include<time.h>
#include<stdio.h>
#include<numeric> // accumulate
using namespace std;
#define print(A) printf("%s = %d\n",#A ,A);
#define printt(A,B) printf("%s = %d | %s = %d\n",#A,A,#B,B);
#define _c cout << "---" << endl;
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define mem(A,B) memset(A,B,sizeof A);
#define sz(x) (int)x.size()
typedef long long ll;
typedef long long unsigned llu;
int dx[]={0,0,1,-1,1,1,-1,-1};
int dy[]={1,-1,0,0,1,-1,1,-1};
const double pi = 2 * acos(0.0);


vector<int>adj[1001];
bool vis[500];
vector<int>v;
int id;
map<string,int>hs;
map<int,string>mm;
inline void dfs(int n){
	vis[n]=1;
	for(int i=0;i<sz(adj[n]);++i){
		int u=adj[n][i];
		if(!vis[u])
			dfs(u);
	}
	v.push_back(n);
}

int main() {
#ifndef ONLINE_JUDGE
    freopen("a.txt", "r", stdin);
//    freopen("b.txt", "w", stdout);
#endif

    int n;
    while(scanf("%d",&n)>0){
    	for(int i=0;i<n;++i)
    		adj[i].clear(),vis[i]=0;
    	v.clear();
    	hs.clear();
    	mm.clear();
    	id=0;
    	vector<string>cc;
    	while(n--){
    		string s;
    		cin >> s;
    		if(hs.find(s)==hs.end()){
    			hs[s]=id;
    			mm[id++]=s;
    			cc.push_back(s);
    		}
    	}
    	int m;
    	scanf("%d",&m);
    	while(m--){
    		string s,r;
    		cin >> s >> r;
    		int u,v;
    		u=hs[s];v=hs[r];
    		adj[v].push_back(u);
    	}
    	 for(int i=0;i<id;++i)
    	 	if(!vis[i])
    	 		dfs(i);
    	vector<string>r;
    	for(int i=0;i<id;++i)
    		r.push_back(mm[v[i]]);

    	for(int i=0;i<sz(r);++i)
    		cout << r[i] << " ";
    	puts("");
    }


    return 0;
}

[likhon5]

my code is fine, passes every test case in udebug but why getting wa here?

[waled_salah]

Hi all
I still got runtime error and i dont know why ??
Can anyone help me ?

Code : https://www.ideone.com/dO8Km9

Thanks in advance.