Submission #2668939


Source Code Expand

/* main code starts from line 133. */

/* ---------- STL Libraries ---------- */

// IO library
#include <cstdio>
#include <iomanip>
#include <ios>
#include <iostream>

// algorithm library
#include <algorithm>
#include <cmath>
#include <numeric>

// container library
#include <array>
#include <bitset>
#include <map>
#include <queue>
#include <set>
#include <string>
#include <vector>

/* ---------- Namespace ---------- */

using namespace std;

/* ---------- Type Abbreviation ---------- */

template <typename T>
using V = vector<T>;
template <typename T, typename U>
using P = pair<T, U>;
template <typename T>
using PQ = priority_queue<T>;
template <typename T>
using GPQ = priority_queue<T, vector<T>, greater<T>>;

using ll = long long;

#define fst first
#define snd second
#define pb push_back
#define mp make_pair
#define mt make_tuple

/* ---------- conversion ---------- */

#define INT(c) static_cast<int>(c)
#define CHAR(n) static_cast<char>(n)
#define LL(n) static_cast<ll>(n)
#define DOUBLE(n) static_cast<double>(n)

/* ---------- container ---------- */

#define ALL(v) (v).begin(), (v).end()
#define SIZE(v) (LL((v).size()))

#define FIND(v, k) (v).find(k) != (v).end()
#define VFIND(v, k) find(ALL(v), k) != (v).end()

#define SORT(v) sort(ALL(v))
#define GSORT(v) sort(ALL(v), greater<decltype((v).front())>())

/* ---------- repetition ---------- */

#define FOR(i, a, b) for (ll i = (a); i < (b); i++)
#define REP(i, n) FOR(i, 0, n)
#define NREP(i, n) FOR(i, 1, n + 1)

#define RFOR(i, a, b) for (ll i = (a); i >= (b); i--)
#define RREP(i, n) RFOR(i, n - 1, 0)
#define RNREP(i, n) RFOR(i, n, 1)

// Usual REP runs from 0 to n-1 (R: n-1 to 0)
// Natural REP runs from 1 to n (R: n to 1)

/* ---------- Short Functions ---------- */

template <typename T>
T sq(T a) {
    return a * a;
}

#define fcout cout << fixed << setprecision(10)

/* ----------- debug ---------- */

template <typename T, typename U>
void testP2(T a, U b) {
    cout << "(" << a << ", " << b << ")" << endl;
    return;
}

template <typename T>
void testV(T v) {
    cout << "[";
    for (auto i : v) {
        cout << i << ", ";
    }
    cout << "\b\b]" << endl;
    return;
}

template <typename T>
void testV2(T v) {
    for (auto sv : v) {
        testV(sv);
    }
    cout << endl;
    return;
}

#define GET_VAR_NAME(variable) #variable
#define test(x) cout << GET_VAR_NAME(x) << " = " << x << endl;
#define testP(p)                      \
    cout << GET_VAR_NAME(p) << " = "; \
    testP2(p.fst, p.snd);

/* ---------- Constants ---------- */

// const ll MOD = 1e9 + 7;
// const int INF = 1 << 25;
// const ll INF = 1LL << 50;
// const double PI = acos(-1);
// const double EPS = 1e-10;
const ll dx[4] = {0, -1, 1, 0};
const ll dy[4] = {-1, 0, 0, 1};
// const ll dx[8] = {-1, 0, 1, -1, 1, -1, 0, 1};
// const ll dy[8] = {-1, -1, -1, 0, 0, 1, 1, 1};

/* v-v-v-v-v-v-v-v-v Main Part v-v-v-v-v-v-v-v-v */

/* ---------- Type Definition ----------- */


/* ---------- Global Variance ----------- */

V<V<ll>> grid(50, V<ll>(50));
V<V<bool>> use(50, V<bool>(50, false));
V<P<ll, ll>> ans;

/* ------------- Functions -------------- */

void init() {
    ll H, W, K;
    cin >> H >> W >> K;

    REP(i, 50) {
        string S;
        cin >> S;
        REP(j, 50) {
            grid[i][j] = LL(S[j] - '0');
        }
    }
    return;
}

void output() {
    cout << SIZE(ans) / 8 << endl;
    for (auto p : ans) {
        cout << p.fst + 1 << " " << p.snd + 1 << endl;
    }
}

void update(ll v) {
    REP(i, 50) {
        REP(j, 50) {
            if (grid[i][j] == v) use[i][j] = true;
        }
    }
    return;
}

bool dfs(ll x, ll y, ll d) {
    if (d == 8) return true;
    if (x < 0 || x >= 50 || y < 0 || y >= 50 || !use[x][y]) return false;

    use[x][y] = false;
    REP(i, 4) {
        ll sx = x + dx[i];
        ll sy = y + dy[i];
        if (dfs(sx, sy, d + 1)) {
            ans.pb(mp(x, y));
            return true;
        }
    }
    use[x][y] = true;
    return false;
}

/* ----------- Main Function ------------ */

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);

    init();
    RNREP(v, 9) {
        update(v);
        REP(i, 50) {
            REP(j, 50) {
                dfs(i, j, 0);
            }
        }
    }

    output();
    return 0;
}

Submission Info

Submission Time
Task A - Multiple Pieces
User Tiramister
Language C++14 (GCC 5.4.1)
Score 613692
Code Size 4497 Byte
Status AC
Exec Time 5 ms
Memory 384 KB

Judge Result

Set Name test_01 test_02 test_03 test_04 test_05 test_06 test_07 test_08 test_09 test_10
Score / Max Score 63008 / 1343058 60464 / 1343058 59792 / 1343058 55884 / 1343058 66971 / 1343058 55273 / 1343058 65640 / 1343058 58154 / 1343058 66074 / 1343058 62432 / 1343058
Status
AC × 1
AC × 1
AC × 1
AC × 1
AC × 1
AC × 1
AC × 1
AC × 1
AC × 1
AC × 1
Set Name Test Cases
test_01 subtask_01_01.txt
test_02 subtask_01_02.txt
test_03 subtask_01_03.txt
test_04 subtask_01_04.txt
test_05 subtask_01_05.txt
test_06 subtask_01_06.txt
test_07 subtask_01_07.txt
test_08 subtask_01_08.txt
test_09 subtask_01_09.txt
test_10 subtask_01_10.txt
Case Name Status Exec Time Memory
subtask_01_01.txt AC 5 ms 384 KB
subtask_01_02.txt AC 5 ms 384 KB
subtask_01_03.txt AC 5 ms 384 KB
subtask_01_04.txt AC 5 ms 384 KB
subtask_01_05.txt AC 5 ms 384 KB
subtask_01_06.txt AC 5 ms 384 KB
subtask_01_07.txt AC 5 ms 384 KB
subtask_01_08.txt AC 5 ms 384 KB
subtask_01_09.txt AC 5 ms 384 KB
subtask_01_10.txt AC 5 ms 384 KB