Submission #718621

#	Time	Username	Problem	Language	Result	Execution time	Memory
718621		lam	Hexagonal Territory (APIO21_hexagon)	C++14	9 / 100	1 ms	468 KiB

hexagon

#include "hexagon.h"
#include <bits/stdc++.h>
#include <vector>
#define ll long long
using namespace std;
const ll mod = 1e9 + 7;
ll ppow(ll x, ll y)
{
    ll temp = 1LL;
    while (y>0)
    {
        if (y&1) temp=temp*x%mod;
        x=x*x%mod;
        y/=2;
    }
    return temp;
}
int32_t draw_territory(int32_t N, int32_t A, int32_t B, std::vector<int32_t> D, std::vector<int32_t> L) {
    ll dist = L[0];
    ll ans = dist*(dist+2)%mod*(dist+1)%mod*ppow(3LL,mod-2)%mod*B%mod;
    assert(L[0]==L[1]&&L[1]==L[2]);
    ll ans1 = (dist+1)*(dist+2)%mod*ppow(2ll,mod-2)%mod*A%mod;
    ans=(ans+ans1)%mod;
  return int(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