제출 #1201903

#제출 시각아이디문제언어결과실행 시간메모리
1201903TriseedotComparing Plants (IOI20_plants)C++20
5 / 100
50 ms6472 KiB
#include "plants.h" #include <bits/stdc++.h> using namespace std; #define len(v) (int) (v.size()) int n, k; vector<int> r; vector<int> p; void init(int K, vector<int> R) { r = R; k = K; n = len(r); p.assign(2 * n + 1, 0); for (int i = 0; i < 2 * n; i++) { int i1 = i % n, i2 = (i - 1 + n) % n; if (r[i1] != r[i2]) { p[i + 1]++; } } for (int i = 1; i <= 2 * n; i++) { p[i] += p[i - 1]; } return; } int compare_plants(int x, int y) { if (p[y] - p[x + 1] == 0) { if (r[x] == 1) { return -1; } else { return 1; } } else if (p[n + x] - p[y + 1] == 0) { if (r[y] == 1) { return 1; } else { return -1; } } return 0; }
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