oj.uz

Submission #225146

# Submission time Handle Problem Language Result Execution time Memory
225146 2020-04-19T10:14:07 Z VEGAnn Simfonija (COCI19_simfonija) C++14
110 / 110
 58 ms 8300 KB 
#include <bits/stdc++.h>
#define sz(x) ((ll)x.size())
#define MP make_pair
#define PB push_back
#define ft first
#define sd second
#define all(x) x.begin(),x.end()
#define pll pair<ll,ll>
using namespace std;
typedef long long ll;
const ll N = 100100;
const ll OO = 1e18;
vector<pll> lf, rt;
vector<pll> qr;
ll n, k, a[N], b[N], sum_lf, sum_rt, extra_lf, extra_rt, pref = 0;
ll ptr_lf, ptr_rt;

ll extra(){
    return extra_lf + extra_rt + pref * ll(ptr_lf) - pref * ll(ptr_rt);
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

    cin >> n >> k;

    for (ll i = 0; i < n; i++)
        cin >> a[i];

    for (ll j = 0; j < n; j++){
        cin >> b[j];

        qr.PB(MP(b[j] - a[j], j));
    }

    ll ans = OO;

    sort(all(qr));

    ll i = 0, j = 0;
    while (j < n && qr[i].ft == qr[j].ft){
        lf.PB(MP(0, qr[i].sd));
        j++;
    }

    i = j;

    if (j == sz(qr)){
        cout << 0;
        return 0;
    }

    ptr_rt = min(n - j, k);
    ptr_lf = k - ptr_rt;

    for (ll I = j; I < n; I++){
        ll nw = -(a[qr[I].sd] + qr[0].ft) + b[qr[I].sd];
        rt.PB(qr[I]);
        sum_rt += nw;

        if (I + ptr_rt >= n){
            extra_rt += nw;
        }
    }

    reverse(all(rt));

    ans = min(sum_lf + sum_rt - extra(), ans);

    for (; i < n; ){
        pref += qr[i].ft - qr[i - 1].ft;

        j = i;
        while (j < n && qr[i].ft == qr[j].ft){
            sum_rt += a[qr[j].sd] + qr[0].ft - b[qr[j].sd];

            lf.PB(MP(-pref, qr[j].sd));
            sum_lf += -pref;

            if (ptr_rt >= sz(rt)){
                extra_rt += a[qr[j].sd] + qr[0].ft - b[qr[j].sd];
                ptr_rt--;

                extra_lf += lf[ptr_lf].ft;
                ptr_lf++;
            }

            rt.pop_back();
            j++;
        }

        while (ptr_rt > 0 && lf[ptr_lf].ft + pref >= -(a[rt[ptr_rt - 1].sd] + qr[0].ft) + b[rt[ptr_rt - 1].sd] - pref) {
            extra_lf += lf[ptr_lf].ft;
            ptr_lf++;

            extra_rt -= -(a[rt[ptr_rt - 1].sd] + qr[0].ft) + b[rt[ptr_rt - 1].sd];
            ptr_rt--;
        }

        ans = min(ans, sum_lf + sum_rt + pref * sz(lf) - pref * sz(rt) - extra());
        i = j;
    }

    cout << ans;

    return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 8172 KB Output is correct
2 Correct 49 ms 8172 KB Output is correct
3 Correct 46 ms 8172 KB Output is correct

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 8180 KB Output is correct
2 Correct 49 ms 8176 KB Output is correct
3 Correct 46 ms 8168 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 8172 KB Output is correct
2 Correct 47 ms 8176 KB Output is correct
3 Correct 46 ms 8168 KB Output is correct

Subtask #5
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 8300 KB Output is correct
2 Correct 47 ms 8296 KB Output is correct
3 Correct 49 ms 8076 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 8168 KB Output is correct
2 Correct 58 ms 8248 KB Output is correct
3 Correct 58 ms 8168 KB Output is correct

Subtask #7
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 8300 KB Output is correct
2 Correct 48 ms 8236 KB Output is correct
3 Correct 48 ms 8168 KB Output is correct

Subtask #8
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 8168 KB Output is correct
2 Correct 47 ms 8208 KB Output is correct
3 Correct 49 ms 8168 KB Output is correct

Subtask #9
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 8172 KB Output is correct
2 Correct 50 ms 8172 KB Output is correct
3 Correct 48 ms 8172 KB Output is correct

Subtask #10
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 8076 KB Output is correct
2 Correct 48 ms 8076 KB Output is correct
3 Correct 48 ms 8164 KB Output is correct