Submission #488844

#	Time	Username	Problem	Language	Result	Execution time	Memory
488844		cfalas	Hexagonal Territory (APIO21_hexagon)	C++14	9 / 100	1 ms	288 KiB

hexagon

#include "hexagon.h"
#include<bits/stdc++.h>
using namespace std;
#define mp make_pair
#define INF 10000000
#define MOD 1000000007
#define MID ((l+r)/2)
#define HASHMOD 2305843009213693951
#define ll long long
#define ull unsigned long long
#define F first
#define S second
typedef pair<ll, ll> ii;
typedef pair<ii, int> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef map<int, int> mii;

#define EPS 1e-6
#define FOR(i,n) for(int i=0;i<((int)(n));i++)
#define FORi(i,a,b) for(int i=((int)(a));i<((int)(b));i++)
#define FOA(v, a) for(auto v : a)

int t, n;
vi a, b;

ll mpow(ll a, ll b){
	if(b==0) return 1;
	if(b==1) return a;
	ll z = mpow(a, b/2);
	z*=z;
	z%=MOD;
	if(b%2) z*=a;
	return z%MOD;
}

ll modinv(ll x){
	return mpow(x, MOD-2);
}

int draw_territory(int N, int A, int B,
                   std::vector<int> D, std::vector<int> L) {
	ll ans = L[0] + 1;
	ans *= L[0] + 2;
	ans %= MOD;
	ans *= modinv(2);
	ans %= MOD;
	ans *= A;
	ans %= MOD;
	//cout<<ans<<endl;
	ll ans2 = 0;
	ans2 = L[0];
	ans2 *= L[0] + 1;
	ans2 %= MOD;
	ans2 *= 2 * L[0] + 1;
	ans2 %= MOD;
	ans2 *= modinv(6);
	ans2 %= MOD;
	//cout<<ans2<<endl;
	ll ans3=0;
	ans3 = L[0];
	ans3 *= L[0] + 1;
	ans3 %= MOD;
	ans3 *= modinv(2);
	ans3 %= MOD;
	ans2 += ans3;
	ans2 %= MOD;
	//cout<<ans2<<endl;
	ans2 *= B;
	ans2 %= MOD;
	return (ans + ans2)%MOD;
}

• 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