oj.uz

Submission #72454

# Submission time Handle Problem Language Result Execution time Memory
72454 2018-08-26T08:17:55 Z (#2175, xdoju, kazel, pps789) Key of Impassable Doors (FXCUP3_key) C++17
23 / 100
 10 ms 1944 KB 
#include<bits/stdc++.h>
#include"key.h"
using namespace std;

int sz[1005];
int out[1005], mb[1005];
vector<int> cycle[1005];

void EnsureKeyInfo(int N){
  for(int i=1;i<=N;i++) {
    TakeKey(i);
    sz[i] = Explore();
    if(sz[i] == 1) out[i] = i;
  }
  for(int i=1;i<=N;i++) {
    if(mb[i]) continue;
    vector<int> cand;
    for(int j=1;j<=N;j++) {
      if(sz[j] == sz[i]-1) cand.push_back(j);
    }
    random_shuffle(cand.begin(), cand.end());
    for(int j : cand) {
      TakeKey(i);
      TakeKey(j);
      int ret = Explore();
      if(ret == sz[i]) {
        out[i] = j;
        break;
      }
    }
    if(out[i]) continue;
    cand.clear();
    for(int j=i+1;j<=N;j++) {
      if(i == j) continue;
      if(sz[i] == sz[j]) cand.push_back(j);
    }
    if(cand.size() == sz[i]) {
      cand.push_back(i);
      sort(cand.begin(), cand.end());
      int x = cand[0];
      for(int j : cand) {
        cycle[x].push_back(j);
        mb[j] = x;
      }
      continue;
    } else {
      vector<int> rcand;
      for(int j : cand) {
        TakeKey(i);
        TakeKey(j);
        int ret = Explore();
        if(ret == sz[i]) rcand.push_back(j);
      }
      rcand.push_back(i);
      sort(rcand.begin(), rcand.end());
      int x = rcand[0];
      for(int j : rcand) {
        cycle[x].push_back(j);
        mb[j] = x;
      }
    }
  }
  for(int i=1;i<=N;i++) {
    if(mb[i]) {
      if(cycle[i].empty()) continue;
      for(int x : cycle[i]) {
        for(int y : cycle[i]) {
          Report(x,y);
        }
      }
    } else {
      int prv = i;
      Report(i,i);
      int x = out[i];
      while(x != prv) {
        if(mb[x]) {
          for(int j : cycle[mb[x]]) {
            Report(i, j);
          }
          break;
        } else {
          Report(i, x);
          prv = x;
          x = out[x];
        }
      }
    }
  }
}

Compilation message

key.cpp: In function 'void EnsureKeyInfo(int)':
key.cpp:37:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(cand.size() == sz[i]) {
        ~~~~~~~~~~~~^~~~~~~~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 3 ms 740 KB Output is correct
3 Correct 4 ms 740 KB Output is correct
4 Correct 3 ms 848 KB Output is correct
5 Correct 4 ms 900 KB Output is correct
6 Correct 4 ms 900 KB Output is correct
7 Correct 3 ms 924 KB Output is correct
8 Correct 4 ms 1052 KB Output is correct
9 Correct 4 ms 1052 KB Output is correct
10 Correct 4 ms 1052 KB Output is correct
11 Correct 4 ms 1052 KB Output is correct
12 Correct 4 ms 1052 KB Output is correct
13 Correct 4 ms 1052 KB Output is correct
14 Correct 3 ms 1052 KB Output is correct
15 Correct 4 ms 1104 KB Output is correct
16 Correct 3 ms 1104 KB Output is correct
17 Correct 4 ms 1104 KB Output is correct

Subtask #2
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 3 ms 740 KB Output is correct
3 Correct 4 ms 740 KB Output is correct
4 Correct 3 ms 848 KB Output is correct
5 Correct 4 ms 900 KB Output is correct
6 Correct 4 ms 900 KB Output is correct
7 Correct 3 ms 924 KB Output is correct
8 Correct 4 ms 1052 KB Output is correct
9 Correct 4 ms 1052 KB Output is correct
10 Correct 4 ms 1052 KB Output is correct
11 Correct 4 ms 1052 KB Output is correct
12 Correct 4 ms 1052 KB Output is correct
13 Correct 4 ms 1052 KB Output is correct
14 Correct 3 ms 1052 KB Output is correct
15 Correct 4 ms 1104 KB Output is correct
16 Correct 3 ms 1104 KB Output is correct
17 Correct 4 ms 1104 KB Output is correct
18 Correct 7 ms 1896 KB Output is correct
19 Correct 5 ms 1944 KB Output is correct
20 Runtime error 10 ms 1944 KB Execution failed because the return code was nonzero
21 Halted 0 ms 0 KB -

Subtask #3
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 3 ms 740 KB Output is correct
3 Correct 4 ms 740 KB Output is correct
4 Correct 3 ms 848 KB Output is correct
5 Correct 4 ms 900 KB Output is correct
6 Correct 4 ms 900 KB Output is correct
7 Correct 3 ms 924 KB Output is correct
8 Correct 4 ms 1052 KB Output is correct
9 Correct 4 ms 1052 KB Output is correct
10 Correct 4 ms 1052 KB Output is correct
11 Correct 4 ms 1052 KB Output is correct
12 Correct 4 ms 1052 KB Output is correct
13 Correct 4 ms 1052 KB Output is correct
14 Correct 3 ms 1052 KB Output is correct
15 Correct 4 ms 1104 KB Output is correct
16 Correct 3 ms 1104 KB Output is correct
17 Correct 4 ms 1104 KB Output is correct
18 Correct 7 ms 1896 KB Output is correct
19 Correct 5 ms 1944 KB Output is correct
20 Runtime error 10 ms 1944 KB Execution failed because the return code was nonzero
21 Halted 0 ms 0 KB -