제출 #890761

#제출 시각아이디문제언어결과실행 시간메모리
890761Cyber_WolfTwo Currencies (JOI23_currencies)C++17
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> #pragma GCC optimize("Ofast") using namespace std; using namespace __gnu_pbds; #define lg long long #define ordered_set tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> #define fastio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0); #define mid (lr+hr)/2 const lg N = 1e5+5; vector<lg> adj[N], o[N]; vector<array<lg, 2>> updates(N); lg euler[N], depth[N], anc[N][20], in[N], out[N], tmp, seg[N << 2][2], edges[N][2], que[N][4], low[N], high[N], best[N], cnt[N]; /* segtree: sum, cnt queries: st, en, gold, silver */ void dfs(lg src) { in[src] = ++tmp; euler[in[src]] = src; for(auto it : adj[src]) { if(anc[src][0] == it) continue; anc[it][0] = src; for(int i = 1; i < 20; i++) { if(anc[it][i-1] == -1) break; anc[it][i] = anc[anc[it][i-1]][i-1]; } depth[it] = depth[src]+1; dfs(it); } out[src] = tmp; } lg lca(lg a, lg b) { if(depth[a] > depth[b]) swap(a, b); for(int i = 19; i+1; i--) { if(anc[b][i] == -1 || depth[anc[b][i]] < depth[a]) continue; b = anc[b][i]; } if(a == b) return a; for(int i = 19; i+1; i--) { if(anc[a][i] == -1 || anc[a][i] == anc[b][i]) continue; a = anc[a][i]; b = anc[b][i]; } return anc[a][0]; } void build(lg node, lg lr, lg hr) { if(lr == hr) { seg[node][0] = 0; seg[node][1] = 0; return; } build(node << 1, lr, mid); build(node << 1 | 1, mid+1, hr); seg[node][0] = 0; seg[node][1] = 0; } void update(lg node, lg lr, lg hr, lg idx, lg val) { if(idx > hr || lr > idx) return; if(lr == hr) { seg[node][0] += val; seg[node][1]++; return; } update(node << 1, lr, mid, idx, val); update(node << 1 | 1, mid+1, hr, idx, val); seg[node][0] = seg[node << 1][0]+seg[node << 1 | 1][0]; seg[node][1] = seg[node << 1][1]+seg[node << 1 | 1][1]; return; } array<lg, 2> get(lg node, lg lr, lg hr, lg lq, lg hq) { if(lq > hr || lr > hq) return {0, 0}; if(lq <= lr && hr <= hq) return {seg[node][0], seg[node][1]}; array<lg, 2> ab = get(node << 1, lr, mid, lq, hq); array<lg, 2> cd = get(node << 1 | 1, mid+1, hr, lq, hq); ab[0] += cd[0]; ab[1] += cd[1]; return ab; } int main() { fastio; lg n, m, q; cin >> n >> m >> q; for(int i = 1; i < n; i++) { lg u, v; cin >> u >> v; adj[u].push_back(v); adj[v].push_back(u); edges[i][0] = u; edges[i][1] = v; } memset(anc, -1, sizeof(anc)); dfs(1); for(int i = 1; i < n; i++) { if(depth[edges[i][0]] > depth[edges[i][1]]) swap(edges[i][0], edges[i][1]); } for(int i = 1; i <= m; i++) { lg a, b; cin >> a >> b; updates[i][0] = b; updates[i][1] = a; } sort(updates.begin()+1, updates.begin()+m+1); for(int i = 0; i < q; i++) { for(int j = 0; j < 4; j++) cin >> que[i][j]; low[i] = 0, high[i] = m; } bool changed = true; while(changed) { changed = false; build(1, 1, n); for(int i = 0; i < q; i++) { if(low[i] != high[i]) o[(low[i]+high[i]) >> 1].push_back(i); } for(int i = 0; i <= m; i++) { if(i) { update(1, 1, n, in[edges[updates[i][1]][1]], updates[i][0]); update(1, 1, n, out[edges[updates[i][1]][1]]+1, -updates[i][0]); } while(o[i].size()) { lg idx = o[i].back(); o[i].pop_back(); lg _lca = lca(que[idx][0], que[idx][1]); array<lg, 2> ab = get(1, 1, n, in[que[idx][0]], out[que[idx][0]]); array<lg, 2> cd = get(1, 1, n, in[que[idx][1]], out[que[idx][1]]); array<lg, 2> ef = get(1, 1, n, in[_lca], out[_lca]); if(cost <= que[idx][3]) { if(low[idx] != i+1) changed = true; low[idx] = i+1; best[idx] = i; } else{ if(high[idx] != i-1) changed = true; high[idx] = i-1; } } } } for(int i = 0; i <= m; i++) { } for(int i = 0; i < q; i++) { } return 0; }

컴파일 시 표준 에러 (stderr) 메시지

currencies.cpp: In function 'int main()':
currencies.cpp:160:8: error: 'cost' was not declared in this scope; did you mean 'cosl'?
  160 |     if(cost <= que[idx][3])
      |        ^~~~
      |        cosl