제출 #793056

#제출 시각아이디문제언어결과실행 시간메모리
7930561bin자리 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], W, v[b * 3], pfx[b]; int seg[b * 2][2]; vector<int> Y, X; void upd_lazy(int ix, int l, int r){ if(!lazy[ix]) return; seg[ix][0] += 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][0] = min(seg[ix * 2][0], seg[ix * 2 + 1][0]); seg[ix][1] = (seg[ix * 2][0] == seg[ix][0] ? seg[ix * 2][1] : 0) + (seg[ix * 2 + 1][0] == seg[ix][0] ? seg[ix * 2 + 1][1] : 0); return; } void calc(int ix, int p){ vector<int> t; for(int i = -1; i <= 0; i++) for(int j = -1; j <= 0; j++) t.emplace_back(v[ix + i * (W + 2) + 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; W = W_; n = H * W; for(int i = 0; i <= (H + 2) * (W + 2); i++) v[i] = n; for(int i = 0; i < n; i++) v[++Y[i] * (W + 2) + ++X[i]] = i; for(int i = b; i < b * 2; i++) seg[i][0] = b; for(int y = 1; y <= H + 1; y++) for(int x = 1; x <= W + 1; x++) { vector<int> t; for(int i = -1; i <= 0; i++) for(int j = -1; j <= 0; j++) t.emplace_back(v[(y + i) * (W + 2) + x + j]); sort(all(t)); pfx[t[0]]++; pfx[t[1]]--; pfx[t[2]]++; pfx[t[3]]--; } int cur = 0; for(int i = 0; i < n; i++){ cur += pfx[i]; seg[b + i][0] = cur; seg[b + i][1] = 1; } for(int i = b - 1; i; i--){ seg[i][0] = min(seg[i * 2][0], seg[i * 2 + 1][0]); seg[i][1] = (seg[i * 2][0] == seg[i][0] ? seg[i * 2][1] : 0) + (seg[i * 2 + 1][0] == seg[i][0] ? seg[i * 2 + 1][1] : 0); } 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) * (W + 2) + X[i1] + j, -1); calc((Y[i2] + i) * (W + 2) + X[i2] + j, -1); } swap(Y[i1], Y[i2]); swap(X[i1], X[i2]); swap(v[Y[i1] * (W + 2) + X[i1]], v[Y[i2] * (W + 2) + X[i2]]); for(int i = 0; i < 2; i++) for(int j = 0; j < 2; j++){ calc((Y[i1] + i) * (W + 2) + X[i1] + j, 1); calc((Y[i2] + i) * (W + 2) + X[i2] + j, 1); } if(seg[1][0] == 4) return seg[1][1]; return 0; } int main(void){ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); int n, m, q, a, b; cin >> n >> m >> q; vector<int> h(n * m), w(n * m); for(int i = 0; i < n * m; i++) cin >> h[i] >> w[i]; give_initial_chart(n, m, h, w); cin >> q; while(q--){ cin >> a >> b; cout << swap_seats(a, b) << '\n'; } return 0; }

컴파일 시 표준 에러 (stderr) 메시지

/usr/bin/ld: /tmp/ccv4p2YI.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccd5ObhJ.o:seats.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status