제출 #1122608

#제출 시각아이디문제언어결과실행 시간메모리
1122608otariusPictionary (COCI18_pictionary)C++20
140 / 140
188 ms15164 KiB
#include <bits/stdc++.h> #include <bits/extc++.h> using namespace __gnu_pbds; using namespace std; // #pragma GCC optimize("Ofast") // #pragma GCC optimize ("unroll-loops") // #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") #define ff first #define sc second #define pb push_back #define ll long long #define pll pair<ll, ll> #define pii pair<int, int> #define ull unsigned long long #define all(x) (x).begin(),(x).end() #define rall(x) (x).rbegin(),(x).rend() mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); mt19937_64 rngl(chrono::steady_clock::now().time_since_epoch().count()); // #define int long long // #define int unsigned long long // #define ordered_set(T) tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update> // #define ordered_multiset(T) tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update> void open_file(string filename) { freopen((filename + ".in").c_str(), "r", stdin); freopen((filename + ".out").c_str(), "w", stdout); } // const ll mod = 1e9 + 7; // const ll mod = 998244353; const ll inf = 1e9; const ll biginf = 1e18; const int maxN = 1e5 + 25; vector<int> qs[maxN]; int par[maxN], sz[maxN]; void make_set() { for (int i = 1; i < maxN; i++) { par[i] = i; sz[i] = 1; } } int find_set(int x) { if (par[x] == x) return x; return par[x] = find_set(par[x]); } void union_set(int x, int y) { x = find_set(x); y = find_set(y); if (x == y) return; if (sz[x] < sz[y]) swap(x, y); sz[x] += sz[y]; par[y] = x; } void solve() { int n, m, q; cin >> n >> m >> q; int x[q + 1], y[q + 1], l[q + 1], r[q + 1], ans[q + 1]; for (int i = 1; i <= q; i++) { cin >> x[i] >> y[i]; l[i] = 1; r[i] = m; ans[i] = -1; } while (1) { bool f = 1; make_set(); for (int i = 1; i <= q; i++) { if (l[i] > r[i]) continue; qs[(l[i] + r[i]) / 2].pb(i); f = 0; } if (f) break; for (int i = 1; i <= m; i++) { for (int j = m - i + 1; j <= n; j += m - i + 1) union_set(m - i + 1, j); for (int j : qs[i]) { if (find_set(x[j]) == find_set(y[j])) { ans[j] = i; r[j] = i - 1; } else l[j] = i + 1; } } for (int i = 1; i < maxN; i++) qs[i].clear(); } for (int i = 1; i <= q; i++) cout << ans[i] << '\n'; } int32_t main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr); int t = 1; // cin >> t; while (t--) { solve(); cout << '\n'; } return 0; }

컴파일 시 표준 에러 (stderr) 메시지

pictionary.cpp: In function 'void open_file(std::string)':
pictionary.cpp:30:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     freopen((filename + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pictionary.cpp:31:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |     freopen((filename + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...