제출 #834633

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
834633	2023-08-22 16:15:32	kingfran1907	조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2)	C++14	0 / 100	9 ms	19028 KiB

joitter2

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#include <bits/stdc++.h>
#define X first
#define Y second
using namespace std;
typedef long long llint;
const int maxn = 2e5+10;
int n, m;
int cale[maxn], siz[maxn];
llint sol = 0;
set< pair<int, int> > graph[maxn], graph2[maxn];
int fin(int x) {
  if (x == cale[x]) return x;
  return cale[x] = fin(cale[x]);
}
int get_size(int x) {
  return graph[x].size() + graph2[x].size();
}
void remove(int x, set< pair<int, int> > &s, bool flag = false) {
  auto iter = s.lower_bound({x, -1});
  while (iter != s.end() && iter->X == x) {
    //if (flag) printf("removing: %d %d (%d)\n", iter->X, iter->Y, siz[x]);
    sol -= siz[x] * flag;
    iter = s.erase(iter);
  }
}
 
 
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컴파일 시 표준 에러 (stderr) 메시지

joitter2.cpp: In function 'void merge(int, int)':
joitter2.cpp:64:7: warning: unused variable 'las' [-Wunused-variable]
   64 |   int las = iter.Y;
      |       ^~~
joitter2.cpp:79:7: warning: unused variable 'las' [-Wunused-variable]
   79 |   int las = iter.Y;
      |       ^~~
joitter2.cpp: In function 'int main()':
joitter2.cpp:98:15: warning: unused variable 'cb' [-Wunused-variable]
   98 |   int ca = a, cb = b;
      |               ^~
joitter2.cpp:91:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   91 |  scanf("%d%d", &n, &m);
      |  ~~~~~^~~~~~~~~~~~~~~~
joitter2.cpp:96:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   96 |   scanf("%d%d", &a, &b);
      |   ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 1
• Subtask 2: 0 / 16
• Subtask 3: 0 / 83