Submission #163050

#	Time	Username	Problem	Language	Result	Execution time	Memory
163050		_qVp_	Kralj (COCI16_kralj)	C++14	140 / 140	919 ms	53164 KiB

kralj

#include <bits/stdc++.h>

using namespace std;

typedef pair < int, int > II;
const int md = 5e5 + 10;

int n;
int a[md], b[md], pre[md];
vector < int > adj[md];

int solve(int start) {
    int res = 0;
    set < int > S;
    for(int i = start, j = 1; j <= n; j++, i = i % n + 1) {
        for(int j = 0; j < adj[i].size(); j++)
            S.insert(adj[i][j]);
        set < int > :: iterator it = S.upper_bound(b[i]);
        if (it == S.end()) 
            S.erase(S.begin());
        else {
            S.erase(it);
            res++;
        }
    }
    return res;
}

int main() {
    //freopen("test.in", "r", stdin);
    ios_base::sync_with_stdio(0);
    cin >> n;
    for(int i = 1; i <= n; i++) {
        cin >> a[i];
        pre[i] = -1;
    }
    for(int i = 1; i <= n; i++)
        cin >> b[i];
    II start = II(1e9, 1e9);
    for(int i = 1; i <= n; i++) {
        int x;
        cin >> x;
        adj[a[i]].push_back(x); 
        //cout << a[i] << " " << x << endl;
        pre[a[i]]++;
    }
    for(int i = 1; i <= n; i++) {
        pre[i] += pre[i - 1];
        start = min(start, II(pre[i], i));
    }
    cout << solve(start.second % n + 1);
    return 0;
}

Compilation message (stderr)

kralj.cpp: In function 'int solve(int)':
kralj.cpp:16:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 0; j < adj[i].size(); j++)
                        ~~^~~~~~~~~~~~~~~

• Subtask 1: 140 / 140