Submission #983476

#	Time	Username	Problem	Language	Result	Execution time	Memory
983476		bachhoangxuan	Hexagonal Territory (APIO21_hexagon)	C++17	0 / 100	1 ms	348 KiB

hexagon

#include "hexagon.h"
#include <bits/stdc++.h>
using i32 = int;
#define int long long
const int mod = 1e9+7;
const int inv2 = (mod+1)/2;
int dx[]={0,0,1,1,0,-1,-1},
    dy[]={0,1,1,0,-1,-1,0};

i32 draw_territory(i32 N, i32 A, i32 B,
                   std::vector<i32> D, std::vector<i32> L) {
    int X=0,Y=0;
    __int128 a=0,b=0;
    for(int i=0;i<N;i++){
        b+=L[i];
        int nX=X+L[i]*dx[D[i]];
        int nY=Y+L[i]*dy[D[i]];
        a+=(__int128)X*nY-(__int128)Y*nX;
        X=nX;Y=nY;
    }
    a=(abs(a)+b)%mod;
    a=a*inv2%mod;
    a=(a+1)%mod;
    return (int)(a*A%mod);
}
#undef int

• Subtask 1: 0 / 3
• Subtask 2: 0 / 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