Submission #201102

#	Time	Username	Problem	Language	Result	Execution time	Memory
201102		BThero	무지개나라 (APIO17_rainbow)	C++17	0 / 100	3046 ms	19248 KiB

rainbow

// Why am I so dumb? :c
// chrono::system_clock::now().time_since_epoch().count()
                                                  
#include<bits/stdc++.h>
#include "rainbow.h"
//#include<ext/pb_ds/assoc_container.hpp>
//#include<ext/pb_ds/tree_policy.hpp>

#define pb push_back
#define mp make_pair

#define all(x) (x).begin(), (x).end()

#define fi first
#define se second

using namespace std;
//using namespace __gnu_pbds;

typedef long long ll;   
typedef pair<int, int> pii;
//template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

const int MAXN = (int)1e3 + 5;
const int MAXM = (int)1e5 + 5;
const int dx[] = {0, 1, 0, -1};
const int dy[] = {1, 0, -1, 0};
const char dc[] = {'E', 'S', 'W', 'N'};

int col[MAXN][MAXN];

pii arr[MAXN];

char str[MAXN];

int n, m, k;

int stx, sty;

void init(int R, int C, int sr, int sc, int M, char *S) {
    n = R;
    m = C;
    stx = sr;
    sty = sc;
    k = M;

    for (int i = 0; i < k; ++i) {
        str[i] = S[i];
    }

    arr[0] = mp(stx, sty);

    for (int i = 0; i < k; ++i) {
        int idx = find(dc, dc + 4, str[i]) - dc;
        stx += dx[idx];
        sty += dy[idx];
        arr[i + 1] = mp(stx, sty);                                           
    }

    for (int i = 0; i <= k; ++i) {
        int x, y;
        tie(x, y) = arr[i];
        col[x][y] = 1;
    }    
}

int colour(int ax, int ay, int bx, int by) {
    set<pii> ver;

    for (int i = ax; i <= bx + 1; ++i) {
        ver.insert(mp(i, ay));
        ver.insert(mp(i, by + 1));        
    }

    for (int i = ay; i <= by + 1; ++i) {
        ver.insert(mp(ax, i));
        ver.insert(mp(bx + 1, i));
    }

    int e = (bx - ax + 1) * 2 + (by - ay + 1) * 2;
    bool saw = 0;

    for (int x = ax; x <= bx; ++x) {
        for (int y = ay; y <= by; ++y) {
            if (col[x][y] == 1) {
                saw = 1;
                ver.insert(mp(x, y));
                ver.insert(mp(x + 1, y));
                ver.insert(mp(x + 1, y + 1));
                ver.insert(mp(x, y + 1));
                e += 4;

                for (int d = 0; d < 4; ++d) {
                    int nx = x + dx[d];
                    int ny = y + dy[d];

                    if (nx < ax || nx > bx || ny < ay || ny > by || col[nx][ny]) {
                        --e;
                    }
                }                
            }
        }
    }                                                                      

    return e - (int)ver.size() + (saw == 0);
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 12
• Subtask 3: 0 / 24
• Subtask 4: 0 / 27
• Subtask 5: 0 / 26