Submission #228928

#	Time	Username	Problem	Language	Result	Execution time	Memory
228928		kartel	Preokret (COCI18_preokret)	C++14	50 / 50	5 ms	512 KiB

preokret

#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 +100500
#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;

vector <pair <int, int> > v;
int x, ans, n, m, i, j, a, b;

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("input.txt");
//    out("output.txt");

    cin >> n;
    for (i = 1; i <= n; i++)
    {
        cin >> x;
        v.pb({x, 1});
        if (x <= 2 * 12 * 60) ans++;
    }
    cin >> m;
    for (i = 1; i <= m; i++)
    {
        cin >> x;
        v.pb({x, 2});
        if (x <= 2 * 12 * 60) ans++;
    }

    cout << ans << el;

    sort(v.begin(), v.end());

    ans = 0;

    a = 0;b = 0;
    for (i = 0; i < v.size(); i++)
    {
        if (a < b && v[j].S == 1)
        {
            j = i;
            while (j < v.size() && v[j].S == 1) j++, a++;
            if (a > b) ans++;
            i = j - 1;
        }

        else if (a > b && v[j].S == 2)
        {
            j = i;
            while (j < v.size() && v[j].S == 2) j++, b++;
            if (a < b) ans++;
            i = j - 1;
        }

        else if (v[j].S == 2)
        {
            j = i;
            while (j < v.size() && v[j].S == 2) j++, b++;
            i = j - 1;
        }
        else
        {
            j = i;
            while (j < v.size() && v[j].S == 1) j++, a++;
            i = j - 1;
        }
    }
    cout << ans << el;
}

Compilation message (stderr)

preokret.cpp: In function 'int main()':
preokret.cpp:61:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i = 0; i < v.size(); i++)
                 ~~^~~~~~~~~~
preokret.cpp:66:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             while (j < v.size() && v[j].S == 1) j++, a++;
                    ~~^~~~~~~~~~
preokret.cpp:74:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             while (j < v.size() && v[j].S == 2) j++, b++;
                    ~~^~~~~~~~~~
preokret.cpp:82:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             while (j < v.size() && v[j].S == 2) j++, b++;
                    ~~^~~~~~~~~~
preokret.cpp:88:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             while (j < v.size() && v[j].S == 1) j++, a++;
                    ~~^~~~~~~~~~

• Subtask 1: 50 / 50