oj.uz

Submission #244191

# Submission time Handle Problem Language Result Execution time Memory
244191 2020-07-02T18:19:54 Z NONAME Pohlepko (COCI16_pohlepko) C++14
80 / 80
 89 ms 4864 KB 
#include <bits/stdc++.h>
#define dbg(x) cerr << #x << " = " << x << "\n"
#define fast_io ios_base::sync_with_stdio(0); cin.tie(0); cout.tie()
using namespace std;
using ll = long long;

char c[2000][2000];

bool cmp(pair <int, int> x, pair <int, int> y) {
    return c[x.first][x.second] < c[y.first][y.second];
}

int main() {
    fast_io;

    int n, m;

    cin >> n >> m;

    for (int i = 0; i < n; ++i)
    for (int j = 0; j < m; ++j)
        cin >> c[i][j];

    vector <pair <int, int> > p, np;
    p.push_back(make_pair(0, 0));

    for (int i = 0; i < n + m - 1; ++i) {
        sort(p.begin(), p.end(), cmp);

        cout << c[p[0].first][p[0].second];

        if (i == n + m - 2)
            break;

        char ch = 'z';

        for (auto j : p) {
            int x = j.first, y = j.second;

            if (x + 1 < n)
                ch = min(ch, c[x + 1][y]);

            if (y + 1 < m)
                ch = min(ch, c[x][y + 1]);
        }

        for (auto j : p) {
            int x = j.first, y = j.second;

            if (x + 1 < n && c[x + 1][y] == ch)
                np.push_back(make_pair(x + 1, y));

            if (y + 1 < m && c[x][y + 1] == ch)
                np.push_back(make_pair(x, y + 1));
        }

        sort(np.begin(), np.end());
        np.resize(unique(np.begin(), np.end()) - np.begin());

        p = np;
        np.clear();
    }
}

Subtask #1
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 1280 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 8 ms 1024 KB Output is correct
7 Correct 25 ms 2944 KB Output is correct
8 Correct 57 ms 4220 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 5 ms 768 KB Output is correct
11 Correct 6 ms 640 KB Output is correct
12 Correct 10 ms 2304 KB Output is correct
13 Correct 11 ms 4224 KB Output is correct
14 Correct 58 ms 4216 KB Output is correct
15 Correct 6 ms 640 KB Output is correct
16 Correct 89 ms 4864 KB Output is correct