제출 #138562

#제출 시각아이디문제언어결과실행 시간메모리
138562Mahdi_Jfri자리 배치 (IOI18_seats)C++14
0 / 100
4088 ms32304 KiB
#include "seats.h" #include<bits/stdc++.h> using namespace std; #define ll long long #define pb push_back const int maxn = 1e6 + 20; int n , a[maxn] , pos[maxn] , cnt[maxn * 4] , mn[maxn * 4] , Add[maxn * 4]; void build(int s = 0 , int e = n , int v = 1) { cnt[v] = e - s; if(e - s < 2) return; int m = (s + e) / 2; build(s , m , 2 * v); build(m , e , 2 * v + 1); } void add(int l , int r , int val , int s = 0 , int e = n , int v = 1) { if(l <= s && e <= r) { Add[v] += val; mn[v] += val; return; } if(r <= s || e <= l) return; int m = (s + e) / 2; add(l , r , val , s , m , 2 * v); add(l , r , val , m , e , 2 * v + 1); mn[v] = min(mn[2 * v] , mn[2 * v + 1]); cnt[v] = 0; if(mn[v] == mn[2 * v]) cnt[v] += cnt[2 * v]; if(mn[v] == mn[2 * v + 1]) cnt[v] += cnt[2 * v + 1]; mn[v] += Add[v]; } void d(int k , int val) { if(k < 0 || k > n) return; add(pos[k] , n , pos[k - 1] < pos[k]? -1 * val : 1 * val); add(pos[k] , n , pos[k + 1] < pos[k]? -1 * val : 1 * val); } void give_initial_chart(int H, int W, vector<int> R, vector<int> C) { n = H * W; if(H != 1) cout << 1/0; build(); for(int i = 0; i < n; i++) { a[i] = C[i] + 1; pos[a[i]] = i; } pos[0] = pos[n + 1] = 1e9; for(int i = 0; i < n; i++) d(a[i] , 1); } int swap_seats(int x, int y) { for(int i = -1; i <= 1; i++) d(a[x] + i , -1) , d(a[y] + i , -1); swap(a[x] , a[y]); swap(pos[a[x]] , pos[a[y]]); for(int i = -1; i <= 1; i++) d(a[x] + i , 1) , d(a[y] + i , 1); while(mn[1] < 2); if(mn[1] != 2) return 0; else return cnt[1]; }

컴파일 시 표준 에러 (stderr) 메시지

seats.cpp: In function 'void give_initial_chart(int, int, std::vector<int>, std::vector<int>)':
seats.cpp:62:12: warning: division by zero [-Wdiv-by-zero]
   cout << 1/0;
           ~^~
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...