Submission #64103

#	Time	Username	Problem	Language	Result	Execution time	Memory
64103		Just_Solve_The_Problem	popa (BOI18_popa)	C++11	0 / 100	117 ms	620 KiB

popa

#include "popa.h"
#include <bits/stdc++.h>

#define pb push_back
#define pii pair < int, int >
#define fr first
#define sc second
#define mk make_pair

using namespace std;

int tab[123][123];
pii ar[123];
int used[123];

int solve(int n, int left[], int right[]) {
  assert(n == 100);
  memset(used, sizeof used, 0);
  memset(tab, sizeof tab, 0);
  for (int i = 0; i < n; i++)
    left[i] = right[i] = -1;
  int root = 0;
  int mx = 0;
  for (int i = 0; i < n; i++) {
    int len = 0;
    for (int j = 0; j < n; j++) {
      if (j == i) continue;
      tab[i][j] = query(i, i, j, j);
      if (tab[i][j]) {
        len++;
      }
    }
    ar[i] = mk(len, i);
  }
  sort(ar, ar + n);
  reverse(ar, ar + n);
  root = ar[0].sc;
  queue < int > q;
  q.push(root);
  used[root] = 1;
  while (!q.empty()) {
    int v = q.front();
    q.pop();
    int mx = -1;
    for (int i = 0; i < n; i++) {
      if (used[ar[i].sc]) continue;
      if (tab[v][ar[i].sc]) {
        mx = ar[i].sc;
        break;
      }
    }
    if (mx != -1) {
      used[mx] = 1;
      left[v] = mx;
      q.push(mx);
    }
    mx = -1;
    for (int i = 0; i < n; i++) {
      if (used[ar[i].sc]) continue;
      if (tab[v][ar[i].sc]) {
        mx = ar[i].sc;
        break;
      }
    }
    if (mx != -1) {
      used[mx] = 1;
      right[v] = mx;
      q.push(mx);
    }
  }
  return root;
}

Compilation message (stderr)

popa.cpp: In function 'int solve(int, int*, int*)':
popa.cpp:18:30: warning: 'memset' used with constant zero length parameter; this could be due to transposed parameters [-Wmemset-transposed-args]
   memset(used, sizeof used, 0);
                              ^
popa.cpp:19:28: warning: 'memset' used with constant zero length parameter; this could be due to transposed parameters [-Wmemset-transposed-args]
   memset(tab, sizeof tab, 0);
                            ^
popa.cpp:23:7: warning: unused variable 'mx' [-Wunused-variable]
   int mx = 0;
       ^~

• Subtask 1: 0 / 37
• Subtask 2: 0 / 24
• Subtask 3: 0 / 39