Submission #133390

#	Time	Username	Problem	Language	Result	Execution time	Memory
133390		forelax	Cezar (COCI16_cezar)	C++14	40 / 100	4 ms	376 KiB

cezar

#include<bits/stdc++.h>
using namespace std;
vector<int> visited(26),visiting(26),order;
vector<vector<int> > dir(26,vector<int> (26));
bool good=true;
void dfs(int ind){
    for(int i = 0 ; i < 26 ; i ++){
        if(visited[i]||!dir[ind][i])continue;
        if(visiting[i]){
            good=false;
            return;
        }
        visiting[i]=true;
        dfs(i);
        if(!good)return;
    }
    order.push_back(ind);
    visited[ind]=true;
}
int main(){
    int n;
    cin>>n;
    vector<string> a(n),b(n);
    for(int i = 0 ; i < n ; i ++){
        cin>>a[i];
    }
//    cout<<endl;
    for(int i = 0,t ; i < n ; i ++){
        cin>>t;t--;
        b[i]=a[t];
//        cout<<b[i]<<endl;
    }
    for(int i = 0,k ; i < n ; i ++){
        for(int j = i+1 ; j < n ; j ++){
            int l=min(b[i].length(),b[j].length());
            for( k=0 ; k<l ; k ++)
                if(b[i][k]!=b[j][k])break;
            if(k==b[j].length()){
                cout<<"NE";
                return 0;
            }
            if(k==b[i].length()){
                continue;
            }
            dir[b[i][k]-'a'][b[j][k]-'a']=true;
        }
    }
    for(int i = 25 ; i >= 0 ; i --){
        if(visited[i])continue;
        visiting[i]=true;
        dfs(i);
        if(!good){
            cout<<"NE";
            return 0;
        }
    }
    vector<char> rez(26);
    for(int i = 0 ; i < order.size() ; i ++)
        rez[order[i]]=char('z'-i);
    cout<<"DA"<<endl;
//    for(int i = 0 ; i < 26 ; i ++)
//        cout<<char(i+'a');
//    cout<<endl;
    for(int i = 0 ; i < 26 ; i ++)
        cout<<rez[i];
}

Compilation message (stderr)

cezar.cpp: In function 'int main()':
cezar.cpp:38:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if(k==b[j].length()){
                ~^~~~~~~~~~~~~~~
cezar.cpp:42:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if(k==b[i].length()){
                ~^~~~~~~~~~~~~~~
cezar.cpp:58:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0 ; i < order.size() ; i ++)
                     ~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10