Submission #121359

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
121359	2019-06-26 12:23:13	impri	문명 (KOI17_civilization)	C++14	54 / 100	1080 ms	52116 KiB

civilization

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#include<iostream>
#include<queue>
using namespace std;
int parent[4000001];
int siz[4000001];
int mov[4][2] = { 1,0,
0,1,
0,-1,
-1,0 };
int find(int n) {
  if (parent[n] == n)
    return n;
  else
    return parent[n] = find(parent[n]);
}
void uni(int a, int b) {
  if (find(a) == find(b))
    return;
  siz[find(b)] += siz[find(a)];
  parent[find(a)] = find(b);
}
int mapping(int a, int b) {
  return a * 2000 + b;
}
int val(int a, int b, int c) {
  if (a < c && b >= 0 && a >= 0 && b < c)
    return 1;
  return 0;
 
 
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Compilation message (stderr)

civilization.cpp: In function 'int main()':
civilization.cpp:57:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0;j<q.size();j++) {
               ~^~~~~~~~~
civilization.cpp:15:20: warning: 'point' may be used uninitialized in this function [-Wmaybe-uninitialized]
   return parent[n] = find(parent[n]);
          ~~~~~~~~~~^~~~~~~~~~~~~~~~~
civilization.cpp:38:6: note: 'point' was declared here
  int point;
      ^~~~~

• Subtask 1: 19 / 19
• Subtask 2: 35 / 35
• Subtask 3: 0 / 46