Submission #474649

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
474649	2021-09-19 09:18:43	sean617	우호 조약 체결 (JOI14_friends)	C++98	0 / 100	85 ms	13512 KiB

friends

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#include <iostream>
#include <cstdio>
#include <vector>
#include <queue>
#define N 100005
using namespace std;
typedef long long ll;
ll n, m, ans, bu[N], v[N], m1[N*2], m2[N*2], s[N];
vector<int> a[N];
queue<int> qu;
ll f(ll p) {
  if (bu[p] == p) return p;
  else return bu[p] = f(bu[p]);;
}
int main()
{
  ll i, j, t, t1, t2, x1, x2;
  ios::sync_with_stdio(0);
  cin.tie(0);
  cin >> n >> m;
  for (i = 0; i < m; i++) {
    cin >> t1 >> t2;
    m1[i] = t1;
    m2[i] = t2;
    a[t1].push_back(t2);
  }
  for (i = 1; i <= n; i++) bu[i] = i;
  for (i = 1; i <= n; i++) {
    if (a[i].size() >= 2) {
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

friends.cpp: In function 'int main()':
friends.cpp:31:18: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |    for (j = 1; j < a[i].size(); j++) {
      |                ~~^~~~~~~~~~~~~
friends.cpp:43:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |   for (i = 0; i < a[t].size(); i++) {
      |               ~~^~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 30
• Subtask 3: 0 / 65