제출 #523575

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
523575	2022-02-07 19:53:55	RaresFelix	Chessboard (IZhO18_chessboard)	C++17	70 / 100	952 ms	4980 KiB

chessboard

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#include <iostream>
#include <climits>
#include <tuple>
#include <vector>
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#define MN 167171
using namespace std;
using ll = long long;
ll n, k;
tuple<int, int, int, int> R[MN];
ll P[MN], D[MN];
ll P2[MN], D2[MN];
static inline ll calc(ll a, ll b, ll l) {
    if(P[a] == 0 && P[b] == 0)
        return ((D[a] * D[b] + 1) >> 1) * l * l;
    if(P[a]) {
        ll nrseg;
        if((D[a] & 1) == 0) {
            if(P2[b] <= l) nrseg = D2[b] * l + P2[b];
            else nrseg = (D2[b] + 1) * l;
        } else {
            if(P2[b] <= l) nrseg = D2[b] * l;
            else nrseg = (D2[b] - 1) * l + P2[b];
        }
        return calc(a - P[a], b, l) + P[a] * nrseg;
    }
    return calc(b, a, l);
}
 
 
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