oj.uz

Submission #1045493

# Submission time Handle Problem Language Result Execution time Memory
1045493 2024-08-06T03:22:02 Z vjudge1 Schools (IZhO13_school) C++17
100 / 100
 130 ms 66132 KB 
#include <bits/stdc++.h>
#define fi(i, a, b) for( int i = a; i <= b; i++ )
#define fid(i, a, b) for( int i = a; i >= b; i-- )
#define getbit(x, i) ((x>>i)&1)
#define ll long long
#define pb push_back
#define pii pair<int,int>
#define pli pair<ll,int>
#define pll pair<ll,ll>
#define st first
#define nd second
#define mp make_pair
#define HTManh ""
#define maxn 100009
#define endl '\n'
using namespace std;

int n, m, s;
pll a[300009];

pll st[3][1200009];

void build(int goc = 1, int l = 1, int r = n)
{
    if (l == r)
    {
       st[0][goc] = {a[l].st, l};
       st[1][goc] = {a[l].nd, l};
       st[2][goc] = {a[l].nd - a[l].st, l};
       return;
    }
    int mid = (l+r)/2;
    build(goc*2,l,mid);
    build(goc*2+1,mid+1,r);
    st[0][goc] = min(st[0][goc*2], st[0][goc*2+1]);
    st[1][goc] = max(st[1][goc*2], st[1][goc*2+1]);
    st[2][goc] = max(st[2][goc*2], st[2][goc*2+1]);
}

void update(int vt, int goc = 1, int l = 1, int r = n)
{
    if (vt < l || vt > r) return;
    if (l == r)
    {
        st[0][goc].st = 1e9;
        st[1][goc].st = -1e9;
        st[2][goc].st = -2e9;
        return;
    }
    int mid = (l+r)/2;
    update(vt,goc*2,l,mid);
    update(vt,goc*2+1,mid+1,r);
    st[0][goc] = min(st[0][goc*2], st[0][goc*2+1]);
    st[1][goc] = max(st[1][goc*2], st[1][goc*2+1]);
    st[2][goc] = max(st[2][goc*2], st[2][goc*2+1]);
}

pll get(int tt, int d, int c, int goc = 1, int l = 1, int r = n)
{
    if (c < l || d > r)
    {
        if (tt == 0) return {1e9, 0}; else return {-2e9, 0};
    }
    if (d <= l && r <= c) return st[tt][goc];
    int mid = (l+r)/2;
    if (tt == 0) return min(get(tt,d,c,goc*2,l,mid), get(tt,d,c,goc*2+1,mid+1,r));
    else return max(get(tt,d,c,goc*2,l,mid), get(tt,d,c,goc*2+1,mid+1,r));
}

int bit[300009];

void capnhat(int vt, int gt)
{
    while(vt <= n)
    {
        bit[vt] += gt;
        vt += (vt & -vt);
    }
}

int lay(int vt)
{
    int s = 0;
    while (vt > 0)
    {
        s += bit[vt];
        vt -= (vt & -vt);
    }
    return s;
}

int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(NULL); cout.tie(NULL);
	if (fopen(HTManh".inp", "r"))
    {
        freopen(HTManh".inp", "r", stdin);
        freopen(HTManh".out", "w", stdout);
    }

    cin >> n >> m >> s;
    fi(i,1,n) cin >> a[i].st >> a[i].nd;
    sort(a+1,a+n+1,greater<pll>());
    //fi(i,1,n) cout << a[i].st << " " << a[i].nd << endl;
    build();
    int sl = m + s;
    ll res = 0;
    fi(i,1,n)
    {
        if (i <= sl) res += a[i].st;
        capnhat(i,1);
    }
    //cout << res << endl;
    fi(i,1,s)
    {
        pll gt0 = get(0,1,sl);
        pll gt1 = get(1,sl+1,n);
        pll gt2 = get(2,1,sl);

        //cout << gt0.st << " " << gt1.st << " " << gt2.st << endl;
        int del;
        if (gt1.nd != 0 && gt1.st - gt0.st >= gt2.st)
        {
            del = gt1.nd;
            res += gt1.st - gt0.st;
        }
        else
        {
            del = gt2.nd;
            res += gt2.st;
        }
        //cout << sl << "|" << del << " " << res << endl;
        update(del);
        if (del > sl)
        {
            int tg = lay(sl);
            int dau = 1, cuoi = n;
            while(dau <= cuoi)
            {
                int giua = (dau+cuoi)/2;
                if (lay(giua) < tg - 1) dau = giua + 1;
                else cuoi = giua - 1;
            }
            sl = dau;
        }
        capnhat(del, -1);
    }
    cout << res << endl;
}

Compilation message

school.cpp: In function 'int main()':
school.cpp:98:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   98 |         freopen(HTManh".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
school.cpp:99:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   99 |         freopen(HTManh".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 8536 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 2 ms 8540 KB Output is correct
8 Correct 1 ms 8540 KB Output is correct
9 Correct 2 ms 8540 KB Output is correct
10 Correct 1 ms 8540 KB Output is correct
11 Correct 3 ms 8540 KB Output is correct
12 Correct 3 ms 8748 KB Output is correct
13 Correct 8 ms 17244 KB Output is correct
14 Correct 30 ms 23904 KB Output is correct
15 Correct 36 ms 39260 KB Output is correct
16 Correct 87 ms 39508 KB Output is correct
17 Correct 116 ms 40020 KB Output is correct
18 Correct 112 ms 40276 KB Output is correct
19 Correct 108 ms 40528 KB Output is correct
20 Correct 130 ms 66132 KB Output is correct