Submission #100236

#	Time	Username	Problem	Language	Result	Execution time	Memory
100236		FutymyClone	Simfonija (COCI19_simfonija)	C++14	44 / 110	430 ms	2352 KiB

simfonija

#include <bits/stdc++.h>

using namespace std;

const int N = 1e5 + 5;

int n, m, a[N], b[N];

long long solve (int x) {
    vector <int> vec;
    for (int i = 1; i <= n; i++) vec.push_back(abs(a[i] + x - b[i]));
    sort(vec.begin(), vec.end(), greater <int>());

    long long ans = 0;
    for (int i = m; i < vec.size(); i++) ans += vec[i];
    return ans;
}

int main(){
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    cin >> n >> m;
    for (int i = 1; i <= n; i++) cin >> a[i];
    for (int i = 1; i <= n; i++) cin >> b[i];

    int l = -5e6, r = 5e6, ans = -1e9;
    while (l <= r) {
        int mid = (l + r) / 2;
        long long lef = solve(mid), rig = solve(mid + 1);
        if (lef == rig) {
            ans = mid;
            break;
        }

        if (lef < rig) r = mid - 1;
        else l = mid + 1;
    }

    if (ans < -5e8) ans = l;
    cout << solve(ans);
    return 0;
}

Compilation message (stderr)

simfonija.cpp: In function 'long long int solve(int)':
simfonija.cpp:15:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = m; i < vec.size(); i++) ans += vec[i];
                     ~~^~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 11 / 11
• Subtask 5: 0 / 11
• Subtask 6: 0 / 11
• Subtask 7: 0 / 11
• Subtask 8: 0 / 11
• Subtask 9: 0 / 11
• Subtask 10: 0 / 11