Submission #195613

#	Time	Username	Problem	Language	Result	Execution time	Memory
195613		stefdasca	Kralj (COCI16_kralj)	C++14	140 / 140	1095 ms	56944 KiB

kralj

#include<bits/stdc++.h>
#define god dimasi5eks
#pragma GCC optimize("O3")
#define fi first
#define se second
#define pb push_back
#define pf push_front
#define mod 1000000007
#define dancila 3.14159265359
#define eps 1e-9

// #define fisier 1

using namespace std;

typedef long long ll;

int n, rival[500002];

int frq[500002], sp[1000002];

vector<int> enemy[500002];
int skill[500002], skill2[500002];

int ans = 0;
set<int> vb;

int solve(int st)
{
    int ss = 0;
    vb.clear();
    for(int i = st; i <= st + n - 1; ++i)
    {
        int truepos = i;
        if(truepos > n)
            truepos -= n;
        // skill[truepos];
        for(int j = 0; j < enemy[truepos].size(); ++j)
            vb.insert(skill2[enemy[truepos][j]]);
        if(skill[truepos] > *vb.rbegin())
            vb.erase(vb.begin());
        else
            ++ss, vb.erase(vb.lower_bound(skill[truepos]));
        if(ss + (st + n - 1) - i <= ans)
            return ss;
    }
    return ss;
}
int main()
{

    #ifdef fisier
        ifstream f("input.in");
        ofstream g("output.out");
    #endif

    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n;
    for(int i = 1; i <= n; ++i)
        cin >> rival[i], ++frq[rival[i]], enemy[rival[i]].pb(i);
    for(int i = 1; i <= n; ++i)
        cin >> skill[i];
    for(int i = 1; i <= n; ++i)
        cin >> skill2[i];
    deque<int> mn;
    for(int i = 1; i < 2 * n; ++i)
    {
        int truepos = i;
        if(truepos > n)
            truepos -= n;
        sp[i] = sp[i-1] + frq[truepos] - 1;
        if(i > n && !mn.empty() && mn[0] == i - n)
            mn.pop_front();
        while(!mn.empty() && sp[i] < sp[mn.back()])
            mn.pop_back();
        mn.pb(i);
        if(i >= n && sp[mn[0]] >= sp[i - n])
            ans = max(ans, solve(i - n + 1));
    }
    cout << ans;
    return 0;
}

Compilation message (stderr)

kralj.cpp: In function 'int solve(int)':
kralj.cpp:38:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 0; j < enemy[truepos].size(); ++j)
                        ~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 140 / 140