Submission #1150824

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1150824	2025-02-15 19:36:26	pinbu	Stranded Far From Home (BOI22_island)	C++20	100 / 100	113 ms	13480 KiB

island

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#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second
#define sz(v) (int)(v).size()
using namespace std;
const int MXn = 200005;
const long long oo = 1e18;
const int MOD = 1e9 + 7;
int n, m, a[MXn], s[MXn], par[MXn];
bool cant[MXn];
int find_par(int u) {
  if (u == par[u]) return u;
  int r = find_par(par[u]);
  cant[u] |= cant[par[u]];
  return par[u] = r;
}
signed main(void) {
    ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
    
    #define TASK ""
    if (ifstream(TASK".INP")) {
      freopen(TASK".INP", "r", stdin);
      freopen(TASK".OUT", "w", stdout);
    }
    
    cin >> n >> m;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

island.cpp: In function 'int main()':
island.cpp:26:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |         freopen(TASK".INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
island.cpp:27:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |         freopen(TASK".OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 15 / 15
• Subtask 4: 30 / 30
• Subtask 5: 35 / 35