제출 #131602

#제출 시각아이디문제언어결과실행 시간메모리
131602rondojim자리 배치 (IOI18_seats)C++17
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; const int N = 1e6 + 7; struct segtree{ struct node{ int cnt, mn, lz; node(){ mn = 0; cnt = 1; lz = 0; } node operator+(const node &p)const{ node ret; ret.mn = min(mn, p.mn); ret.cnt = 0; if (ret.mn == mn){ ret.cnt += cnt; } if (ret.mn == p.mn){ ret.cnt += p.cnt; } ret.lz = 0; return ret; } }seg[4 * N]; void update_lazy(int idx){ seg[2 * idx].mn += seg[idx].lz; seg[2 * idx].lz += seg[idx].lz; seg[2 * idx + 1].mn += seg[idx].lz; seg[2 * idx + 1].lz += seg[idx].lz; seg[idx].lz = 0; } void update(int idx, int l, int r, int sl, int sr, int val){ //cout << "update" << idx << " " << l << " " << r << " " << sl << " " << sr << " " << val << endl; if(l > sr || r < sl){ return; } if(sl <= l && r <= sr){ seg[idx].mn += val; seg[idx].lz += val; return; } update_lazy(idx); int mid = (l + r) >> 1; update(2 * idx, l, mid, sl, sr, val); update(2 * idx + 1, mid + 1, r, sl, sr, val); seg[idx] = seg[2 * idx] + seg[2 * idx + 1]; } int get(){ if(seg[1].mn == 2){ return seg[1].cnt; } return 0; } }st; pair<int, int> p[N], mx[N], mn[N]; int ptr[N]; int h, w; int ans = 0; void give_initial_chart(int H, int W, vector<int> R, vector<int> C){ h = H; w = W; for(int i = 0; i < (int)R.size(); i++){ p[i].first = R[i]; p[i].second = C[i]; } if(h == 1){ for(int i = 0; i < w; i++){ ptr[p[i].second] = i; } for(int i = 0; i < w; i++){ //cout << i << " i" << endl; if(p[i].second == H * W - 1){ st.update(1, 0, w - 1, i, w - 1, 1); continue; } if(p[i].second == 0){ st.update(1, 0, w - 1, i, w - 1, 1); } //cout << p[i].second + 1 << " p[i].second" << endl; int j = ptr[p[i].second + 1]; //cout << j<< " j" << endl; st.update(1, 0, w - 1, min(i, j), max(i, j) - 1, 1); } return; } mx[0].first = p[0].first; mx[0].second = p[0].second; mn[0].first = p[0].first; mn[0].second = p[0].second; ans++; for(int i = 1; i < H * W; i++){ mx[i].first = max(mx[i - 1].first, p[i].first); mx[i].second = max(mx[i - 1].second, p[i].second); mn[i].first = min(mn[i - 1].first, p[i].first); mn[i].second = min(mn[i - 1].second, p[i].second); if((mx[i].first - mn[i].first + 1) * (mx[i].second - mn[i].second + 1) == i + 1){ ans++; } } } int swap_seats(int a, int b){ if(h == 1){ if(w == 1){ return 1; } if(a == b){ return st.get(); } if(a > b){ swap(a, b); } //cout << p[a].second << " p " << p[b].second << endl; if(p[a].second + 1 != p[b].second){ int x, y; if(p[a].second != w - 1){ x = ptr[p[a].second + 1]; //cout << x << " x" << endl; st.update(1, 0, w - 1, min(a, x), max(a, x) - 1, -1); st.update(1, 0, w - 1, min(b, x), max(b, x) - 1, 1); } else{ st.update(1, 0, w - 1, a, w - 1, -1); st.update(1, 0, w - 1, b, w - 1, 1); } if(p[b].second != 0){ y = ptr[p[b].second - 1]; //cout << y << " y" << endl; st.update(1, 0, w - 1, min(b, y), max(b, y) - 1, -1); st.update(1, 0, w - 1, min(a, y), max(a, y) - 1, 1); } else{ st.update(1, 0, w - 1, a, w - 1, 1); st.update(1, 0, w - 1, b, w - 1, -1); } } if(p[a].second != p[b].second + 1){ int x, y; if(p[a].second != 0){ x = ptr[p[a].second - 1]; //cout << x << " x" << endl; st.update(1, 0, w - 1, min(a, x), max(a, x) - 1, -1); st.update(1, 0, w - 1, min(b, x), max(b, x) - 1, 1); } else{ st.update(1, 0, w - 1, a, w - 1, -1); st.update(1, 0, w - 1, b, w - 1, 1); } if(p[b].second != w - 1){ y = ptr[p[b].second + 1]; //cout << y << " y" << endl; st.update(1, 0, w - 1, min(b, y), max(b, y) - 1, -1); st.update(1, 0, w - 1, min(a, y), max(a, y) - 1, 1); } else{ st.update(1, 0, w - 1, a, w - 1, 1); st.update(1, 0, w - 1, b, w - 1, -1); } } swap(p[a], p[b]); swap(ptr[p[a].second], ptr[p[b].second]); return st.get(); } swap(p[a], p[b]); if(a > b){ swap(a, b); } for(int i = a; i <= b; i++){ if((mx[i].first - mn[i].first + 1) * (mx[i].second - mn[i].second + 1) == i + 1){ ans--; } if(i){ mx[i].first = max(mx[i - 1].first, p[i].first); mx[i].second = max(mx[i - 1].second, p[i].second); mn[i].first = min(mn[i - 1].first, p[i].first); mn[i].second = min(mn[i - 1].second, p[i].second); } else{ mx[0].first = p[0].first; mx[0].second = p[0].second; mn[0].first = p[0].first; mn[0].second = p[0].second; } if((mx[i].first - mn[i].first + 1) * (mx[i].second - mn[i].second + 1) == i + 1){ ans++; } } return ans; } /*int main(){ int H, W; cin >> H >> W; vector<int> R, C; for(int i = 0; i < H * W; i++){ int x; cin >> x; R.push_back(x); } for(int i = 0; i < H * W; i++){ int x; cin >> x; C.push_back(x); } give_initial_chart(H, W, R, C); while(true){ int a, b; cin >> a >> b; //cout << swap_seats(a, b) << endl; }

컴파일 시 표준 에러 (stderr) 메시지

seats.cpp:255:1: error: unterminated comment
 /*int main(){
 ^