Submission #219410

#	Time	Username	Problem	Language	Result	Execution time	Memory
219410		kartel	Skandi (COCI20_skandi)	C++14	18 / 110	10032 ms	768 KiB

Main

#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
#define F first
#define S second
#define pb push_back
#define N +400500
//#define M ll(1e9 + 7)
#define sz(x) (int)x.size()
#define re return
#define oo ll(1e18)
#define el '\n'
using namespace std;
//using namespace __gnu_pbds;
//typedef tree <int, null_type, less_equal <int> , rb_tree_tag, tree_order_statistics_node_update> ordered_set;
typedef long long ll;
typedef long double ld;

int n, m, i, j, k, mask, I, mrk[N];
char c[501][501], c1[501][501];
vector <pair <int, pair <int, int> > > ans;
vector <pair <int, int> > v;

int main()
{
    srand(time(0));
    ios_base::sync_with_stdio(0);
    iostream::sync_with_stdio(0);
    ios::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
//    in("qual.in");
//    out("qual.out");
    cin >> n >> m;
    for (i = 1; i <= n; i++)
       for (j = 1; j <= m; j++)
    {
        cin >> c[i][j];
        if (c[i][j] == '1') v.pb({i, j}), ans.pb({i, {j + 1, 1}});
    }
    k = v.size();
    for (mask = 0; mask < (1 << k); mask++)
    {
        for (i = 1; i <= n; i++)
           for (j = 1; j <= m; j++) c1[i][j] = c[i][j];
        for (i = 0; i < k; i++)
            if (mask & (1 << i))
        {
            I = v[i].F;
            j = v[i].S + 1;
            while (j <= m && c1[I][j] == '0') c1[I][j]++, j++;
        }
        else
        {
            I = v[i].F + 1;
            j = v[i].S;
            while (I <= n && c1[I][j] == '0') c1[I][j]++, I++;
        }
        int kol = 0;
        for (i = 1; i <= n; i++)
           for (j = 1; j <= m; j++) kol += min(1, (c1[i][j] - '0'));
        if (kol == n * m)
        {
            int kl = k;
            for (i = 0; i < k; i++) mrk[i] = 0;
            for (i = 0; i < k; i++)
                if (mask & (1 << i))
            {
                I = v[i].F;
                j = v[i].S + 1;
                while (j <= m && c1[I][j] > '1' && c[I][j] == '0') j++;
                if (j > m || c[I][j] == '1')
                {
                    kl--;
                    mrk[i] = 1;
                    I = v[i].F;
                    j = v[i].S + 1;
                    while (j <= m && c1[I][j] > '1' && c[I][j] == '0') c1[I][j]--, j++;
                }
            }
            else
            {
                I = v[i].F + 1;
                j = v[i].S;
                while (I <= n && c1[I][j] > '1' && c[I][j] == '0') I++;
                if (I > n || c[I][j] == '1')
                {
                    kl--;
                    mrk[i] = 1;
                    I = v[i].F + 1;
                    j = v[i].S;
                    while (I <= n && c1[I][j] > '1' && c[I][j] == '0') c1[I][j]--, I++;
                }
            }
            if (kl < ans.size())
            {
                ans.clear();
                for (i = 0; i < k; i++)
                    if (!mrk[i])
                {
                    if (mask & (1 << i))
                         ans.pb({v[i].F, {v[i].S, 1}});
                    else ans.pb({v[i].F, {v[i].S, 0}});
                }
            }
        }
    }
    cout << ans.size() << el;
    for (auto it : ans) cout << it.F << " " << it.S.F << " " << ((it.S.S == 1) ? "DESNO" : "DOLJE") << el;
}

Compilation message (stderr)

skandi.cpp: In function 'int main()':
skandi.cpp:100:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if (kl < ans.size())
                 ~~~^~~~~~~~~~~~

• Subtask 1: 18 / 18
• Subtask 2: 0 / 32
• Subtask 3: 0 / 60