oj.uz

Submission #80392

# Submission time Handle Problem Language Result Execution time Memory
80392 2018-10-20T13:25:25 Z Plurm Board (CEOI13_board) C++11
30 / 100
 200 ms 1168 KB 
#include <bits/stdc++.h>
using namespace std;
char a[100005];
char b[100005];
class holder : public vector<bool> {
  public:
  vector<int> hsh;
  inline int ghash(){
    return size() <= 20 ? -1 : hsh[size()-21];
  }
  inline int to_int(){
    int v = 1;
    for(int i = max((int)size()-20,0); i < size(); i++){
      v *= 2;
      if(at(i)) v++;
    }
    return v;
  }
  void push_back(bool b){
    vector<bool>::push_back(b);
    if(hsh.empty()) hsh.push_back(b ? 1 : 0);
    else hsh.push_back(29*hsh.back() + (b ? 1 : 0));
  }
  void pop_back(){
    vector<bool>::pop_back();
    hsh.pop_back();
  }
};
inline void mmove(holder& x,char y){
  int i;
  switch(y){
    case '1':
      x.push_back(false);
      break;

    case '2':
      x.push_back(true);
      break;

    case 'U':
      x.pop_back();
      break;

    case 'L':
      for(i = x.size()-1; i >= 0; i--){
        if(x[i]){
          x[i] = false;
          break;
        }else{
          x[i] = true;
        }
      }
      for(; i < x.size(); i++){
        if(i == 0) x.hsh[i] = x[i] ? 1 : 0;
        else x.hsh[i] = x.hsh[i-1]*53 + (x[i] ? 1 : 0);
      }
      break;

    case 'R':
      for(i = x.size()-1; i >= 0; i--){
        if(x[i]){
          x[i] = false;
        }else{
          x[i] = true;
          break;
        }
      }
      for(; i < x.size(); i++){
        if(i == 0) x.hsh[i] = x[i] ? 1 : 0;
        else x.hsh[i] = x.hsh[i-1]*53 + (x[i] ? 1 : 0);
      }
      break;
  }
}
inline int glv(int x){
  int l = 0;
  while(x > 1){
    x /= 2;
    l++;
  }
  return l;
}
pair<int,int> mem[100005];
int main(){
  gets(a);
  gets(b);
  if(strlen(a) < strlen(b)){
    for(int i = 0; i < 100005; i++){
      swap(a[i],b[i]);
    }
  }
  holder ma;
  holder mb;
  for(int i = 0; a[i]; i++){
    mmove(ma,a[i]);
  }
  int lla = ma.size();
  while(!ma.empty()){
    mem[ma.size()] = make_pair(ma.ghash(),ma.to_int());
    ma.pop_back();
  }
  for(int i = 0; b[i]; i++){
    mmove(mb,b[i]);
  }
  int llb = mb.size();
  int d = 1e9;
  while(!mb.empty()){
    if(mb.ghash() == mem[mb.size()].first){
      d = min(d,(int)(lla - mb.size() + llb - mb.size() + abs(mb.to_int() - mem[mb.size()].second)));
    }
    mb.pop_back();
  }
  printf("%d\n",d);
}

Compilation message

board.cpp: In member function 'int holder::to_int()':
board.cpp:13:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = max((int)size()-20,0); i < size(); i++){
                                        ~~^~~~~~~~
board.cpp: In function 'void mmove(holder&, char)':
board.cpp:53:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(; i < x.size(); i++){
             ~~^~~~~~~~~~
board.cpp:68:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(; i < x.size(); i++){
             ~~^~~~~~~~~~
board.cpp: In function 'int main()':
board.cpp:85:9: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
   gets(a);
         ^
In file included from /usr/include/c++/7/cstdio:42:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:46,
                 from board.cpp:1:
/usr/include/stdio.h:638:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
board.cpp:86:9: warning: 'char* gets(char*)' is deprecated [-Wdeprecated-declarations]
   gets(b);
         ^
In file included from /usr/include/c++/7/cstdio:42:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:46,
                 from board.cpp:1:
/usr/include/stdio.h:638:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
board.cpp:85:7: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result [-Wunused-result]
   gets(a);
   ~~~~^~~
board.cpp:86:7: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result [-Wunused-result]
   gets(b);
   ~~~~^~~
/tmp/ccQWK9t3.o: In function `main':
board.cpp:(.text.startup+0x2a): warning: the `gets' function is dangerous and should not be used.

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 508 KB Output is correct
3 Correct 2 ms 556 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 732 KB Output is correct
2 Correct 3 ms 732 KB Output is correct
3 Correct 5 ms 732 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 732 KB Output is correct
2 Correct 2 ms 732 KB Output is correct
3 Correct 2 ms 732 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 732 KB Output is correct
2 Correct 7 ms 732 KB Output is correct
3 Incorrect 5 ms 732 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 764 KB Output is correct
2 Correct 2 ms 764 KB Output is correct
3 Incorrect 2 ms 764 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 764 KB Output is correct
2 Correct 4 ms 764 KB Output is correct
3 Incorrect 2 ms 764 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 764 KB Output is correct
2 Correct 6 ms 768 KB Output is correct
3 Incorrect 4 ms 768 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1049 ms 1048 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1074 ms 1072 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1078 ms 1168 KB Time limit exceeded
2 Halted 0 ms 0 KB -