제출 #792080

#제출 시각아이디문제언어결과실행 시간메모리
7920801bin자리 배치 (IOI18_seats)C++14
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> #include "seats.h" #pragma GCC optimize("O3") #pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") using namespace std; #define all(v) v.begin(), v.end() typedef long long ll; const int b = 1 << 20; int n, lazy[b * 2], seg[b * 2], cnt[b * 2]; vector<int> Y, X; vector<vector<int>> v; void upd_lazy(int ix, int l, int r){ if(l < n && seg[ix].first == b) cnt[ix] = min(n - 1, r) - l + 1; if(!lazy[ix]) return; seg[ix] += lazy[ix]; if(l ^ r){ lazy[ix * 2] += lazy[ix]; lazy[ix * 2 + 1] += lazy[ix]; } lazy[ix] = 0; return; } void upd(int ix, int nl, int nr, int l, int r, int v){ upd_lazy(ix, nl, nr); if(nl > r || nr < l) return; if(nl >= l && nr <= r){ lazy[ix] += v; upd_lazy(ix, nl, nr); return; } int m = (nl + nr) / 2; upd(ix * 2, nl, m, l, r, v); upd(ix * 2 + 1, m + 1, nr, l, r, v); seg[ix] = min(seg[ix * 2], seg[ix * 2 + 1]); cnt[ix] = (seg[ix * 2] == seg[ix] ? cnt[ix * 2] : 0) + (seg[ix * 2 + 1] == seg[ix] ? cnt[ix * 2 + 1] : 0); return; } void calc(int y, int x, int p){ vector<int> t; for(int i = -1; i <= 0; i++) for(int j = -1; j <= 0; j++) t.emplace_back(v[y + i][x + j]); sort(all(t)); upd(1, 0, b - 1, t[0], t[1] - 1, p); upd(1, 0, b - 1, t[2], t[3] - 1, p); return; } void give_initial_chart(int H, int W, vector<int> R, vector<int> C) { Y = R; X = C; n = H * W; v = vector<vector<int>> (H + 2, vector<int> (W + 2, n)); for(int i = 0; i < n; i++) v[++Y[i]][++X[i]] = i; for(int i = 1; i < b * 2; i++) seg[i].first = b; for(int i = 1; i <= H + 1; i++) for(int j = 1; j <= W + 1; j++) calc(i, j, 1); return; } int swap_seats(int i1, int i2) { for(int i = 0; i < 2; i++) for(int j = 0; j < 2; j++){ calc(Y[i1] + i, X[i1] + j, -1); calc(Y[i2] + i, X[i2] + j, -1); } swap(Y[i1], Y[i2]); swap(X[i1], X[i2]); swap(v[Y[i1]][X[i1]], v[Y[i2]][X[i2]]); for(int i = 0; i < 2; i++) for(int j = 0; j < 2; j++){ calc(Y[i1] + i, X[i1] + j, 1); calc(Y[i2] + i, X[i2] + j, 1); } if(seg[1] == 4) return cnt[1]; return 0; }

컴파일 시 표준 에러 (stderr) 메시지

seats.cpp: In function 'void upd_lazy(int, int, int)':
seats.cpp:17:25: error: request for member 'first' in 'seg[ix]', which is of non-class type 'int'
   17 |     if(l < n && seg[ix].first == b) cnt[ix] = min(n - 1, r) - l + 1;
      |                         ^~~~~
seats.cpp: In function 'void give_initial_chart(int, int, std::vector<int>, std::vector<int>)':
seats.cpp:60:43: error: request for member 'first' in 'seg[i]', which is of non-class type 'int'
   60 |     for(int i = 1; i < b * 2; i++) seg[i].first = b;
      |                                           ^~~~~