제출 #370617

#제출 시각아이디문제언어결과실행 시간메모리
370617Jarif_Rahman다리 (APIO19_bridges)C++17
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> #define pb push_back #define f first #define sc second using namespace std; typedef long long int ll; typedef string str; const int N = 5e4, M = 1e5, Q = 1e5, SQ = 316, lim = 2e5; vector<int> sorter[lim]; tuple<int, int, int> srt[lim]; void counting_sort(tuple<int, int, int> *a, tuple<int, int, int> *b){ int mx = 0; for(int i = 0; a+i < b; i++){ sorter[get<0>(*(a+i))].pb(i); mx = max(mx, get<0>(*(a+i))); } int inx = 0; for(int i = 0; i <= mx; i++){ while(!sorter[i].empty()) srt[inx++] = *(a+sorter[i].back())), sorter[i].pop_back(); } for(int i = 0; i < inx; i++) *(a+i) = srt[i]; } struct dsu{ int n; vector<int> sz, p; stack<tuple<int, int, int>> st; dsu(int nn){ n = nn; sz.resize(n, 1); p.resize(n); for(int i = 0; i < n; i++) p[i] = i; } int get(int x){ if(p[x] != x) return get(p[x]); return p[x]; } int unite(int a, int b){ a = get(a), b = get(b); if(a == b) return 0; if(sz[b] > sz[a]) swap(a, b); st.push({a, b, sz[b]}); sz[a]+=sz[b]; sz[b] = 0; p[b] = a; return 1; } void rollback(){ auto [a, b, ss] = st.top(); st.pop(); sz[a]-=ss; sz[b] = ss; p[b] = b; } }; tuple<int, int, int> edge[M]; int main(){ ios_base::sync_with_stdio(0); cin.tie(0); vector<int> compressor; map<int, int> mp; int n, m; cin >> n >> m; for(int i = 0; i < m; i++){ int a, b, w; cin >> a >> b >> w; a--, b--; edge[i] = make_tuple(w, a, b); compressor.pb(w); } int cmpr = 0; int q; cin >> q; tuple<ll, int, int> query[Q]; for(int i = 0; i < q; i++){ int tt, s; ll w; cin >> tt >> s >> w; s--; query[i] = {tt, s, w}; compressor.pb(w); } sort(compressor.begin(), compressor.end()); for(int i = 0; i < compressor.size(); i++){ if(i != 0 && compressor[i] == compressor[i-1]) continue; mp[compressor[i]] = cmpr++; } for(int i = 0; i < m; i++) get<0>(edge[i]) = mp[get<0>(edge[i])]; for(int i = 0; i < q; i++) get<2>(query[i]) = mp[get<2>(query[i])]; vector<int> ans; dsu ds(N); vector<tuple<int, int, int>> calc; bool ucng[M]; for(int i = 0; i < m; i++) ucng[i] = 1; tuple<int, int, int> edges[M]; vector<int> cng; for(int ql = 0; ql < q; ql+=SQ){ int qr = min(q-1, ql+SQ-1); int cnt = 0; for(int j = ql; j <= qr; j++){ auto [tt, s, w] = query[j]; if(tt == 1){ ucng[s] = 0; } else{ cnt++; calc.pb({w, s, cnt-1}); } } int inx = 0; for(int i = 0; i < m; i++){ if(ucng[i]) edges[inx++] = edge[i]; else cng.pb(i); } vector<int> anss(cnt); vector<vector<pair<int, int>>> upd(cnt); cnt = 0; for(int j = ql; j <= qr; j++){ auto [tt, s, w] = query[j]; if(tt == 1){ get<0>(edge[s]) = w; } else{ for(int x: cng){ auto [ww, a, b] = edge[x]; if(ww >= w) upd[cnt].pb({a, b}); } cnt++; } } counting_sort(edges, edges+inx); sort(calc.rbegin(), calc.rend()); int bc = inx-1; for(auto [w, s, in]: calc){ while(bc >= 0 && get<0>(edges[bc]) >= w){ auto [ww, a, b] = edges[bc]; bc--; ds.unite(a, b); } int k = 0; for(auto [a, b]: upd[in]) k+=ds.unite(a, b); anss[in] = ds.sz[ds.get(s)]; while(k--) ds.rollback(); } ans.insert(ans.end(), anss.begin(), anss.end()); calc.clear(); for(int i = 0; i < m; i++) ucng[i] = 1; cng.clear(); while(!ds.st.empty()) ds.rollback(); } for(int x: ans) cout << x << "\n"; }

컴파일 시 표준 에러 (stderr) 메시지

bridges.cpp: In function 'void counting_sort(std::tuple<int, int, int>*, std::tuple<int, int, int>*)':
bridges.cpp:19:69: error: expected ';' before ')' token
   19 |         while(!sorter[i].empty()) srt[inx++] = *(a+sorter[i].back())), sorter[i].pop_back();
      |                                                                     ^
      |                                                                     ;
bridges.cpp: In function 'int main()':
bridges.cpp:75:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |     for(int i = 0; i < compressor.size(); i++){
      |                    ~~^~~~~~~~~~~~~~~~~~~