Submission #661472

#	Time	Username	Problem	Language	Result	Execution time	Memory
661472		as111	Kralj (COCI16_kralj)	C++14	140 / 140	810 ms	54908 KiB

kralj

#include <iostream>
#include <cstring>
#include <algorithm>
#include <vector>
#include <set>

#define MAXN 500000
using namespace std;


int N;
int dwarves[MAXN+5];
int elves[MAXN+5];
int A[MAXN+5];
int net[MAXN+5]; // net amount of elves
vector <int> matches[MAXN+5];
int ans;
set <int> curr;
void solve(int start) {
    ans = 0;
    for (int i = start, j = 0; j < N; j++, i = (i + 1) % N) {
        for (auto e : matches[i]) curr.insert(e); // all that start here
        auto it = curr.upper_bound(dwarves[i]); // number right above used
        if (it == curr.end()) {
            curr.erase(curr.begin()); 
        }
        else {// bottom can't be used
            ans++;
            curr.erase(it); // use the number right above
        }
    }
}

int main() {
    cin >> N;
    for (int i = 0; i < N; i++) {
        cin >> A[i]; A[i]--;// 0 based
    }
    for (int i = 0; i < N; i++) {
        cin >> dwarves[i];
    }
    fill(net, net + MAXN, -1); // each empty space starts at -1, even out to 0
    for (int i = 0; i < N; i++) {
        cin >> elves[i];
        net[A[i]]++;
        matches[A[i]].push_back(elves[i]);
    }
    int pos = -1;
    int mn = MAXN+1;//min
    for (int i = 0; i < N; i++) {
        if (i!=0) net[i] += net[i - 1];
        if (net[i] < mn) {
            mn = net[i];
            pos = i;
        }
    }
    int start = (pos + 1) % N; // start right after most negative spot
    solve(start);
    cout << ans;
}

• Subtask 1: 140 / 140