Submission #130710

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
130710	2019-07-16 01:19:36	letrongdat	Abduction 2 (JOI17_abduction2)	C++17	100 / 100	3688 ms	259032 KiB

abduction2

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#include <bits/stdc++.h>
using namespace std;
#define forn(i, a, b)                   for(int i=a; i<=b; ++i)
#define ford(i, a, b)                   for(int i=a; i>=b; --i)
#define repn(i, a, b)                   for(int i=a; i <b; ++i)
#define repd(i, a, b)                   for(int i=(int)a-1; i>=b; --i)
const int maxLog = 19;
const int maxN = 5e4 +10;
int H, W, Q;
int A[maxN], B[maxN];
int pw[maxLog];
int col[maxN][maxLog], row[maxN][maxLog];
map< tuple<int, int, int>, long long > dp; 
int max(int a, int b, int c, int d) {
    return max( max(a, b), max(c, d) );
}
long long DFS(int cur_x, int cur_y, int dir) {
    tuple<int, int, int> cur_state = {cur_x, cur_y, dir};
    if (dp.count(cur_state)) return dp[cur_state];
    long long &ans = dp[cur_state];
    int sign, nxt, tmp;
    if (dir == 0 || dir == 1) {
        sign = (dir == 0 ? -1 : 1);
        nxt = -1;
        tmp = cur_x;
        ford(i, 16, 0) { 
            nxt = cur_x + pw[i] * sign - sign;
            if (nxt < 1 || nxt > H) continue;
            if ( (sign == 1 ? row[cur_x][i] : row[nxt][i]) > B[cur_y] ) continue;
            cur_x = nxt + sign;
 
 
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• Subtask 1: 13 / 13
• Subtask 2: 10 / 10
• Subtask 3: 17 / 17
• Subtask 4: 4 / 4
• Subtask 5: 56 / 56