제출 #49487

#제출 시각아이디문제언어결과실행 시간메모리
49487minkank도로 건설 사업 (JOI13_construction)C++17
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; #define int long long typedef pair<int, int> ii; typedef pair<int, ii> II; #define x first #define y second const int N = 5e5 + 5; struct Data { int x, y, x2, y2; }; int n, m, c, par[N]; long long f[N]; II qu[N * 2]; data p[N * 2]; vector<II> E; bool cmp(data u, data v) { return u.x < v.x; } void sweep() { sort(p + 1, p + n + m + 1, cmp); set<ii> s; for(int i = 1; i <= n + m; ++i) { if(p[i].x2 < 0) { set<ii>::iterator it = s.lower_bound(ii(p[i].y, 0)); if(it != s.end() && (*it).x == p[i].y) { int id = (*it).y; E.push_back(II(p[i].x - p[id].x, ii(-p[id].x2, -p[i].x2))); s.erase(it); } s.insert(ii(p[i].y, i)); } else { while(1) { set<ii>::iterator it = s.lower_bound(ii(p[i].y, 0)); if(it == s.end() || (*it).x > p[i].y2) break; s.erase(it); } } } } void reverse() { for(int i = 1; i <= n + m; ++i) { swap(p[i].x, p[i].x2); swap(p[i].y, p[i].y2); } } int find(int u) { if(par[u] == u) return u; return par[u] = find(par[u]); } bool join(int u, int v) { u = find(u); v = find(v); if(u == v) return false; par[u] = v; return true; } vector<ii> d; bool bad(int l1, int l2, int l3) { return 1LL * (d[l2].y - d[l1].y) * (d[l3].x - d[l2].x) > 1LL * (d[l3].y - d[l2].y) * (d[l2].x - d[l1].x); } void add(int a, long long b) { d.push_back(ii(a, b)); while(d.size() >= 3 && !bad(d.size() - 1, d.size() - 2, d.size() - 3)) d.erase(d.end() - 2); } long long query(int x) { int l = 0, r = d.size() - 1; while(l != r) { int mid = (l + r) >> 1; if(1LL * d[mid].x * x + d[mid].y > 1LL * d[mid + 1].x * x + d[mid + 1].y) l = mid + 1; else r = mid; } return 1LL * d[l].x * x + d[l].y; } long long ans[N]; signed main() { ios::sync_with_stdio(false); cin.tie(0); cin >> n >> m >> c; for(int i = 1; i <= n; ++i) cin >> p[i].x >> p[i].y, p[i].x2 = p[i].y2 = -i; for(int i = 1; i <= m; ++i) cin >> p[i + n].x >> p[i + n].y >> p[i + n].x >> p[i + n].y; sweep(); reverse(); sweep(); sort(E.begin(), E.end()); int tot = 0; vector<int> E2; for(int i = 1; i <= n; ++i) par[i] = i; for(int i = E.size() - 1; i >= 0; --i) { int w = E[i].x, u = E[i].y.x, v = E[i].y.y; if(join(u, v)) E2.push_back(w), tot += w; } int cnt = 0; for(int i = 1; i <= n; ++i) if(find(i) == i) cnt++; memset(f, 69, sizeof f); f[cnt] = tot; for(int i = 0; i < E2.size(); ++i) { tot -= E2[i]; f[cnt + 1 + i] = tot; } for(int i = 1; i <= c; ++i) cin >> qu[i].y.x >> qu[i].x, qu[i].y.y = i; for(int i = 1; i <= n; ++i) qu[i + c].x = i, qu[i + c].y.y = -1; sort(qu + 1, qu + n + c + 1); for(int i = 1; i <= n + c; ++i) { if(qu[i].y.y < 0) { add(qu[i].x, f[qu[i].x]); } else { ans[qu[i].y.y] = query(qu[i].y.x); } } for(int i = 1; i <= c; ++i) { if(ans[i] > 1e18) ans[i] = -1; cout << ans[i] << '\n'; } }

컴파일 시 표준 에러 (stderr) 메시지

construction.cpp:20:1: error: 'data' does not name a type; did you mean 'Data'?
 data p[N * 2];
 ^~~~
 Data
construction.cpp:23:15: error: expected ')' before 'u'
 bool cmp(data u, data v) {
               ^
construction.cpp:23:23: error: expected ')' before 'v'
 bool cmp(data u, data v) {
                       ^
construction.cpp:23:24: error: expression list treated as compound expression in initializer [-fpermissive]
 bool cmp(data u, data v) {
                        ^
construction.cpp:23:24: error: left operand of comma operator cannot resolve address of overloaded function
construction.cpp:23:24: error: no context to resolve type of 'std::data'
construction.cpp: In function 'void sweep()':
construction.cpp:28:7: error: 'p' was not declared in this scope
  sort(p + 1, p + n + m + 1, cmp);
       ^
construction.cpp: In function 'void reverse()':
construction.cpp:52:8: error: 'p' was not declared in this scope
   swap(p[i].x, p[i].x2);
        ^
construction.cpp: In function 'int main()':
construction.cpp:95:37: error: 'p' was not declared in this scope
  for(int i = 1; i <= n; ++i) cin >> p[i].x >> p[i].y, p[i].x2 = p[i].y2 = -i;
                                     ^
construction.cpp:96:37: error: 'p' was not declared in this scope
  for(int i = 1; i <= m; ++i) cin >> p[i + n].x >> p[i + n].y >> p[i + n].x >> p[i + n].y;
                                     ^
construction.cpp:112:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < E2.size(); ++i) {
                 ~~^~~~~~~~~~~