제출 #1198000

#제출 시각아이디문제언어결과실행 시간메모리
1198000adiyer육각형 영역 (APIO21_hexagon)C++20
9 / 100
0 ms332 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; const int mod = 1e9 + 7; ll bpm(ll a, ll b, ll m){ ll c = 1; while(b){ if(b & 1) c *= a, c %= m; a *= a, a %= m, b >>= 1; } return c; } int draw_territory(int N, int A, int B, vector < int > D, vector < int > L) { ll cnt = 0, d = 0, cur = 0; for(int i = 0; i < N; i++) cnt = d = L[0]; cnt = (cnt + 1) * (cnt + 2) / 2, cnt %= mod, cnt *= A, cnt %= mod; cur = ((d + 2) * d), cur %= mod; cur *= (d + 1), cur %= mod; cur *= bpm(3, mod - 2, mod), cur %= mod; // cur += (d * (d + 1)) / 2, cur %= mod; cur *= B, cur %= mod; cnt += cur, cnt %= mod; int ans = cnt; return ans; }
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