제출 #934683

#제출 시각아이디문제언어결과실행 시간메모리
934683MinaRagy06육각형 영역 (APIO21_hexagon)C++17
9 / 100
1 ms348 KiB
#include <bits/stdc++.h>
#ifdef MINA
#include "grader.cpp"
#endif
#include "hexagon.h"
using namespace std;
#define ll long long

const int mod = 1e9 + 7;
int draw_territory(int n, int a, int b, vector<int> d, vector<int> l) {
	ll sz = l[0] + 1;
	ll v1 = 1ll * sz * (sz + 1) / 2 % mod * a % mod;

	ll v2 = 0;
	if ((sz - 1) % 3 == 0) {
		v2 = (sz - 1) / 3;
		v2 = 1ll * v2 * sz % mod * (sz + 1) % mod;
	} else if (sz % 3 == 0) {
		v2 = sz / 3;
		v2 = 1ll * v2 * (sz - 1) % mod * (sz + 1) % mod;
	} else {
		v2 = (sz + 1) / 3;
		v2 = 1ll * v2 * (sz - 1) % mod * sz % mod;
	}
	v2 = 1ll * v2 * b % mod;
	return (v1 + v2) % mod;
}
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