Submission #241199

#	Time	Username	Problem	Language	Result	Execution time	Memory
241199		dung11112003	Jousting tournament (IOI12_tournament)	C++11	17 / 100	82 ms	1408 KiB

tournament

#include <bits/stdc++.h>

#define taskname ""
#define pb push_back
#define eb emplace_back
#define fi first
#define se second
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define for0(i, n) for (int i = 0; i < (int)(n); ++i)
#define for1(i, n) for (int i = 1; i <= (int)(n); ++i)
#define ford(i, n) for (int i = (int)(n) - 1; i >= 0; --i)
#define fore(i, a, b) for (int i = (int)(a); i <= (int)(b); ++i)

using namespace std;

typedef long long ll;
typedef long double ld;
typedef complex <ld> cd;
typedef vector <cd> vcd;
typedef vector <int> vi;

template<class T> using v2d = vector <vector <T> >;
template<class T> bool uin(T &a, T b)
{
    return a > b ? (a = b, true) : false;
}
template<class T> bool uax(T &a, T b)
{
    return a < b ? (a = b, true) : false;
}

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());

const int maxN = 1e5 + 10;

namespace firstSub
{
    list <int> a;
    int solve(int n, int m, int val, int *K, int *S, int *E)
    {
        int r = 0, p;
        for0(pos, n)
        {
            a.clear();
            for0(i, pos)
            {
                a.insert(a.end(), K[i]);
            }
            a.insert(a.end(), val);
            for (int i = pos; i < n; i++)
            {
                a.insert(a.end(), K[i]);
            }
            int cnt = 0;
            for0(i, m)
            {
                auto it = a.begin();
                advance(it, S[i]);
                int winner = 0;
                bool joined = 0;
                for (int j = S[i]; j <= E[i]; j++)
                {
                    uax(winner, *it);
                    joined |= (*it == val);
                    it++;
                }
                if (joined)
                {
                    if (winner == val)
                    {
                        ++cnt;
                    }
                    else
                    {
                        break;
                    }
                }
                it = a.begin();
                advance(it, S[i]);
                for (int j = S[i]; j <= E[i]; j++)
                {
                    if (*it < winner)
                    {
                        it = a.erase(it);
                    }
                    else
                    {
                        it++;
                    }
                }
            }
            if (uax(r, cnt))
            {
                p = pos;
            }
        }
        return p;
    }
}

namespace secondSub
{
    int solve(int n, int m, int val, int *K, int *S, int *E)
    {

    }
}

namespace fullSub
{
    int solve(int n, int m, int val, int *K, int *S, int *E)
    {

    }
}

int GetBestPosition(int n, int m, int val, int *K, int *S, int *E)
{
    if (n <= 500)
    {
        return firstSub::solve(n, m, val, K, S, E);
    }
    else if (n <= 5000)
    {
        return secondSub::solve(n, m, val, K, S, E);
    }
    else
    {
        return fullSub::solve(n, m, val, K, S, E);
    }
}

Compilation message (stderr)

tournament.cpp: In function 'int secondSub::solve(int, int, int, int*, int*, int*)':
tournament.cpp:107:5: warning: no return statement in function returning non-void [-Wreturn-type]
     }
     ^
tournament.cpp: In function 'int fullSub::solve(int, int, int, int*, int*, int*)':
tournament.cpp:115:5: warning: no return statement in function returning non-void [-Wreturn-type]
     }
     ^
tournament.cpp: In function 'int firstSub::solve(int, int, int, int*, int*, int*)':
tournament.cpp:98:16: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized]
         return p;
                ^

• Subtask 1: 17 / 17
• Subtask 2: 0 / 32
• Subtask 3: 0 / 51