Submission #1223506

#	Time	Username	Problem	Language	Result	Execution time	Memory
1223506		sokratisi	Hexagonal Territory (APIO21_hexagon)	C++20	9 / 100	0 ms	328 KiB

hexagon

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

using namespace std;

const long long MOD = 1e9+7;
const long long revsix = (1e9+8)/6;
const long long revtwo = (1e9+8)/2;

int draw_territory(int n, int a, int b, vector<int> d, vector<int> l) {
	long long k = l[0]; // modulo/long long stuff and calc final answer
    long long term2 = k;
    term2 *= k+1;
    term2 %= MOD;
    term2 *= 2*k+1;
    term2 %= MOD;
    term2 *= revsix;
    term2 %= MOD;
    long long temp = k * (k+1);
    temp %= MOD;
    temp *= revtwo;
    temp %= MOD;
    term2 += temp;
    term2 %= MOD;
    term2 *= b;
    term2 %= MOD;
    long long term1 = (k+1)*(k+2);
    term1 %= MOD;
    term1 *= revtwo;
    term1 %= MOD;
    term1 *= a;
    term1 %= MOD;
    long long ans = term1 + term2;
    ans %= MOD;
    return ans;
}

• 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