제출 #1091532

#제출 시각아이디문제언어결과실행 시간메모리
1091532thangdz2k7JOI tour (JOI24_joitour)C++17
컴파일 에러
0 ms0 KiB
// author : thembululquaUwU // 3.9.2024 #include <bits/stdc++.h> #define pb push_back #define fi first #define se second #define endl '\n' using namespace std; using ll = long long; using ii = pair <int, int>; using vi = vector <int>; const int MaxN = 2e5 + 5; const int mod = 1e9 + 7; void maxl(auto &a, auto b) {a = max(a, b);} void minl(auto &a, auto b) {a = min(a, b);} int n, par[MaxN], sz[MaxN]; vi badj[MaxN], f; int dfs(int u, int p = -1){ sz[u] = 1; for (int v : badj[u]) if (v != p && par[v] < -1) sz[u] += dfs(v, u); return sz[u]; } int get_cen(int u, int m, int p = -1){ for (int v : badj[u]) if (v != p && par[v] < -1 && sz[v] * 2 > m) return get_cen(v, m, u); return u; } int root; void cen(int u = 0, int p = -1){ u = get_cen(u, dfs(u)); par[u] = p; if (p == -1) root = u; for (int v : badj[u]) if (par[v] < -1) cen(v, u); } vector <ii> pairs = {{6, 1}, {4, 3}, {4, 2}, {4, 1}, {2, 1}}; ll cnt[MaxN][8]; int sign[MaxN][8]; void rs(int u, int child, int val){ if (u == -1) return; if (val < 0) if (par[u] != -1) rs(par[u], u, val); if (val < 0) for (int i = 0; i < 8; ++ i) cnt[u][i] -= cnt[child][i]; for (auto [l, r] : pairs) cnt[u][l | r] += val * (cnt[u][l] * cnt[child][r] + cnt[child][l] * cnt[u][r]); if (val > 0) for (int i = 0; i < 8; ++ i) cnt[u][i] += cnt[child][i]; if (val > 0) if (par[u] != -1) rs(par[u], u, val); } void add(int u, int t, int val){ t = 1 << t; rs(par[u], u, -1); //if (val == -1) return; for (auto [l, r] : pairs) if (r == t || l == t) cnt[u][l | r] -= sign[u][t] * cnt[u][l ^ r ^ t]; if (t == 2) cnt[u][7] -= sign[u][t] * cnt[u][5]; cnt[u][t] += val; if (val == 1) sign[u][t] = 1; else sign[u][t] = 0; for (auto [l, r] : pairs) if (r == t || l == t) cnt[u][l | r] += sign[u][t] * cnt[u][l ^ r ^ t]; if (t == 2) cnt[u][7] += sign[u][t] * cnt[u][5]; rs(par[u], u, 1); } void init(int N, vi F, vi U, vi V, int Q){ for (int i = 0; i < N - 1; ++ i){ int u = U[i], v = V[i]; badj[u].pb(v); badj[v].pb(u); } for (int i = 0; i < N; ++ i) par[i] = -2; cen(); f = F; //for (int i = 0; i < N; ++ i) cerr << i << ' ' << par[i] << endl; for (int i = 0; i < N; ++ i) add(i, f[i], 1); //add(0, f[0], 1); //add(2, f[2], -1); //for (int i = 0; i < N; ++ i){ //for (int j = 0; j < 8; ++ j) cout << cnt[i][j] << ' '; //cout << endl; //} } void change(int u, int t){ add(u, f[u], -1); f[u] = t; add(u, f[u], 1); } ll num_tours(){ return cnt[root][7];} void solve(){ int n; cin >> n; vi f(n); for (int i = 0; i < n; ++ i) cin >> f[i]; vi u(n - 1), v(n - 1); for (int i = 0; i < n - 1; ++ i) cin >> u[i] >> v[i]; int q; cin >> q; init(n, f, u, v, q); cout << num_tours() << endl; for (int i = 1; i <= q; ++ i){ int x, y; cin >> x >> y; change(x, y); cout << num_tours() << endl; } } int main(){ if (fopen("pqh.inp", "r")){ freopen("pqh.inp", "r", stdin); freopen("pqh.out", "w", stdout); } ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); int t = 1; // cin >> t; while (t --) solve(); return 0; }

컴파일 시 표준 에러 (stderr) 메시지

joitour.cpp:18:11: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   18 | void maxl(auto &a, auto b) {a = max(a, b);}
      |           ^~~~
joitour.cpp:18:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   18 | void maxl(auto &a, auto b) {a = max(a, b);}
      |                    ^~~~
joitour.cpp:19:11: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   19 | void minl(auto &a, auto b) {a = min(a, b);}
      |           ^~~~
joitour.cpp:19:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
   19 | void minl(auto &a, auto b) {a = min(a, b);}
      |                    ^~~~
joitour.cpp: In function 'void add(int, int, int)':
joitour.cpp:59:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   59 |     if (t == 2) cnt[u][7] += sign[u][t] * cnt[u][5]; rs(par[u], u, 1);
      |     ^~
joitour.cpp:59:54: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   59 |     if (t == 2) cnt[u][7] += sign[u][t] * cnt[u][5]; rs(par[u], u, 1);
      |                                                      ^~
joitour.cpp: In function 'void init(int, vi, vi, vi, int)':
joitour.cpp:67:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   67 |     for (int i = 0; i < N; ++ i) par[i] = -2; cen(); f = F;
      |     ^~~
joitour.cpp:67:47: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   67 |     for (int i = 0; i < N; ++ i) par[i] = -2; cen(); f = F;
      |                                               ^~~
joitour.cpp: In function 'int main()':
joitour.cpp:98:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   98 |         freopen("pqh.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
joitour.cpp:99:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   99 |         freopen("pqh.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccwa89Wl.o: in function `main':
stub.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccQF7L8k.o:joitour.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status