Submission #83387

#	Time	Username	Problem	Language	Result	Execution time	Memory
83387		wjoao	Cezar (COCI16_cezar)	C++11	20 / 100	3 ms	592 KiB

cezar

#include<bits/stdc++.h>
#define maxn 500

using namespace std;

string entrada[maxn], ordenado[maxn];
int n, ord[maxn], grau[maxn], atual = 'a', mark[maxn], impossivel;
char encryption[maxn];
vector<int> g[maxn];

void dfs(int v, int cor){
  //cout << "Dfs: " << (char)v << " cor: " << (char)cor << endl;
  mark[v] = cor;

  for(int i = 0; i < g[v].size(); i++){
    int u = g[v][i];

    if(mark[u] == cor){
      impossivel = true;
      return;
    }else if(mark[u] == 0){
      dfs(u, cor);
    }
  }
  encryption[v]=atual++;
}

int main(){
  cin >> n;
  for(int i = 0; i < n; i++ ) cin >> entrada[i];
  for(int i = 0; i < n; i++ ){
    cin >> ord[i]; ord[i]--;
    ordenado[i] = entrada[ord[i]];
  }
  //for(int i = 0; i < n; i++){
  //  cout << ordenado[i] << endl;
  //}
  for(int i = 1; i < n; i++){
    int j = 0;
    while(  j < ordenado[i].size() && 
            j < ordenado[i-1].size() && 
            ordenado[i][j] == ordenado[i-1][j] ) j++;

    if( j < ordenado[i].size() && j < ordenado[i-1].size()){
      g[ordenado[i][j]].push_back(ordenado[i-1][j]);
      //cout << (char)ordenado[i][j] << " Tem que ser maior que: " << (char)ordenado[i-1][j] << endl;
    }else if( j == ordenado[i].size() && j < ordenado[i-1].size()){
      impossivel = true;
    }

  }

  for(int i = 'a'; i <= 'z'; i++){
    if(mark[i] == 0) dfs(i, i);
  }

  if(impossivel){
    cout << "NE" << endl;
  }else{
    cout << "DA" << endl;
    for(int i = 'a'; i <= 'z'; i++){
      cout << encryption[i];
    }cout << endl;
  }

  return 0;
}
//b->d->c
/*
1 - bbb        2 - ccc   c->b
2 - ccc    =>  3 - ddd   d->c
3 - ddd        1 - bbb   b->d

1 - ccc         b->c
2 - ddd    =>   c->d
3 - bbb         d->b

2 3 1
*/

Compilation message (stderr)

cezar.cpp: In function 'void dfs(int, int)':
cezar.cpp:15:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < g[v].size(); i++){
                  ~~^~~~~~~~~~~~~
cezar.cpp: In function 'int main()':
cezar.cpp:40:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(  j < ordenado[i].size() && 
             ~~^~~~~~~~~~~~~~~~~~~~
cezar.cpp:41:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             j < ordenado[i-1].size() && 
             ~~^~~~~~~~~~~~~~~~~~~~~~
cezar.cpp:44:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if( j < ordenado[i].size() && j < ordenado[i-1].size()){
         ~~^~~~~~~~~~~~~~~~~~~~
cezar.cpp:44:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if( j < ordenado[i].size() && j < ordenado[i-1].size()){
                                   ~~^~~~~~~~~~~~~~~~~~~~~~
cezar.cpp:45:23: warning: array subscript has type 'char' [-Wchar-subscripts]
       g[ordenado[i][j]].push_back(ordenado[i-1][j]);
                       ^
cezar.cpp:47:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     }else if( j == ordenado[i].size() && j < ordenado[i-1].size()){
               ~~^~~~~~~~~~~~~~~~~~~~~
cezar.cpp:47:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     }else if( j == ordenado[i].size() && j < ordenado[i-1].size()){
                                          ~~^~~~~~~~~~~~~~~~~~~~~~

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