Submission #139435

#	Time	Username	Problem	Language	Result	Execution time	Memory
139435		Minnakhmetov	Kralj (COCI16_kralj)	C++14	140 / 140	770 ms	42344 KiB

kralj

#include<bits/stdc++.h>
using namespace std;
 
#define ll long long
#define all(aaa) aaa.begin(), aaa.end()

const int N = 5e5 + 5;
vector<int> v[N];
int a[N], b[N];

signed main() { 
#ifdef HOME
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int n;
    cin >> n;

    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }

    for (int i = 0; i < n; i++) {
        cin >> b[i];
    }

    for (int i = 0; i < n; i++) {
        int x;
        cin >> x;
        v[a[i] - 1].push_back(x);
    }

    int stock = 0;

    for (int i = 0; i < n; i++) {
        stock += v[i].size();
        stock = max(0, stock - 1);
    }

    int start;

    for (int i = 0; i < n; i++) {
        stock += v[i].size();
        stock = max(0, stock - 1);
        if (stock == 0) {
            start = (i + 1) % n;
            break;
        }
    }

    set<int> st;

    int ans = 0;

    for (int i = start; i < n; i++) {
        for (int j : v[i])
            st.insert(j);   
        if (*st.rbegin() > b[i]) {
            st.erase(st.upper_bound(b[i]));
            ans++;
        }
        else {
            st.erase(st.begin());
        }
    }

    for (int i = 0; i < start; i++) {
        for (int j : v[i])
            st.insert(j);
        if (*st.rbegin() > b[i]) {
            st.erase(st.upper_bound(b[i]));
            ans++;
        }
        else {
            st.erase(st.begin());
        }
    }

    cout << ans;

    return 0;
}

Compilation message (stderr)

kralj.cpp: In function 'int main()':
kralj.cpp:43:9: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
     int start;
         ^~~~~

• Subtask 1: 140 / 140