Submission #466524

#	Time	Username	Problem	Language	Result	Execution time	Memory
466524		rainboy	Hexagonal Territory (APIO21_hexagon)	C++17	9 / 100	1 ms	280 KiB

hexagon

#include "hexagon.h"
#include <vector>

using namespace std;

typedef vector<int> vi;

const int MD = 1000000007, V2 = 500000004, V6 = 166666668;

int choose2(int n) {
	return (long long) n * (n - 1) % MD * V2 % MD;
}

int choose3(int n) {
	return (long long) n * (n - 1) % MD * (n - 2) % MD * V6 % MD;
}

int draw_territory(int n, int a, int b, vi dd, vi ll) {
	int c = choose2(ll[0] + 2), d = choose3(ll[0] + 2) * 2 % MD;

	return ((long long) c * a + (long long) d * b) % MD;
}

• Subtask 1: 3 / 3
• Subtask 2: 6 / 6
• Subtask 3: 0 / 11
• Subtask 4: 0 / 12
• Subtask 5: 0 / 15
• Subtask 6: 0 / 19
• Subtask 7: 0 / 18
• Subtask 8: 0 / 16