Submission #257464

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
257464	2020-08-04T09:49:27 Z	AM1648	Street Lamps (APIO19_street_lamps)	C++17	100 / 100	1909 ms	185960 KB

street_lamps

/* be name khoda */

#define long_enable
#include <iostream>
#include <algorithm>
#include <cstring>
#include <numeric>
#include <vector>
#include <fstream>
#include <set>
#include <map>
using namespace std;

#ifdef long_enable
typedef long long int ll;
#else
typedef int ll;
#endif

typedef pair<ll, ll> pii;
typedef pair<pii, ll> ppi;
typedef pair<ll, pii> pip;
typedef vector<ll> vi;
typedef vector<pii> vpii;

#define forifrom(i, s, n) for (ll i = s; i < n; ++i)
#define forirto(i, n, e) for (ll i = (n) - 1; i >= e; --i)
#define fori(i, n) forifrom (i, 0, n)
#define forir(i, n) forirto (i, n, 0)

#define F first
#define S second
#define pb push_back
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define smin(a, b) a = min(a, (b))
#define smax(a, b) a = max(a, (b))

#define debug(x) cout << #x << " -> " << (x) << endl
#define debug2(x, y) cout << #x << ' ' << #y << " -> " << (x) << ' ' << (y) << endl
#define debug3(x, y, z) cout << #x << ' ' << #y << ' ' << #z << " -> " << (x) << ' ' << (y) << ' ' << (z) << endl
#define debug4(x, y, z, t) cout << #x << ' ' << #y << ' ' << #z << ' ' << #t << " -> " << (x) << ' ' << (y) << ' ' << (z) << ' ' << (t) << endl
#define debuga(x, n) cout << #x << " -> "; fori (i1_da, n) { cout << (x)[i1_da] << ' '; } cout << endl
#define debugaa(x, n, m) cout << #x << " ->\n"; fori (i1_daa, n) { fori (i2_daa, m) { cout << (x)[i1_daa][i2_daa] << ' '; } cout << '\n'; } cout << endl

const ll MOD = 1000000007;
const ll INF = 2000000000;
const long long BIG = 1446803456761533460LL;

#define XL (x << 1)
#define XR (XL | 1)
#define MD ((l + r) >> 1)
#define Add(a, b) a = ((a) + (b)) % MOD
#define Mul(a, b) a = (1LL * (a) * (b)) % MOD

// -----------------------------------------------------------------------

const ll maxn = 300010;

ll N, Q;
string init, street;
set<ll> zrs;
pii qs[maxn];
ll res[maxn];

struct Fenwick {
    ll n;
    vi ar, fen;
    void update(ll i, ll v) {
        for (++i; i <= n; i += i & -i) fen[i] += v;
    }
    void updatelr(ll x, ll y, ll v, bool built) {
        if (!built) ar.eb(x), ar.eb(y);
        else {
            ll l = lower_bound(all(ar), x) - ar.begin();
            ll r = lower_bound(all(ar), y) - ar.begin();
            update(l, v);
            update(r, -v);
        }
    }
    ll get(ll x) {
        ll i = upper_bound(all(ar), x) - ar.begin() - 1;
        ll v = 0;
        for (++i; i; i ^= i & -i) v += fen[i];
        return v;
    }
};

struct Segment {
    Fenwick seg[maxn * 2];
    void build() {
        forifrom (i, 1, N << 1) {
            sort(all(seg[i].ar));
            seg[i].n = unique(all(seg[i].ar)) - seg[i].ar.begin();
            seg[i].ar.resize(seg[i].n);
            seg[i].fen.resize(seg[i].n + 2, 0);
        }
    }
    void update(ll l, ll r, ll li, ll ri, ll v, bool built) {
        for (l += N, r += N; l < r; l >>= 1, r >>= 1) {
            if (l & 1) seg[l++].updatelr(li, ri, v, built);
            if (r & 1) seg[--r].updatelr(li, ri, v, built);
        }
    }
    ll get(ll l, ll r) {
        ll s = 0;
        for (l += N; l; l >>= 1) s += seg[l].get(r - 1);
        return s;
    }
} seg;

void enable(ll t, ll p, bool built) {
    street[p] = '1';
    auto lt = zrs.lower_bound(p);
    --lt;
    ll x = *lt;
    ++lt, ++lt;
    ll y = *lt;
    --lt;
    zrs.erase(lt);
    seg.update(x + 1, p + 1, p, y, Q - t, built);
}

void disable(ll t, ll p, bool built) {
    street[p] = '0';
    zrs.insert(p);
    auto lt = zrs.lower_bound(p);
    --lt;
    ll x = *lt;
    ++lt, ++lt;
    ll y = *lt;
    seg.update(x + 1, p + 1, p, y, -(Q - t), built);
}

void solve(bool built) {
    street = init;
    fori (i, N + 2) zrs.insert(i - 1);
    fori (i, N) if (street[i] == '1') enable(0, i, built);
    fori (i, Q) {
        if (qs[i].F == -1) {
            if (street[qs[i].S] == '0') enable(i + 1, qs[i].S, built);
            else disable(i + 1, qs[i].S, built);
        } else if (built) {
            res[i] = seg.get(qs[i].F, qs[i].S);
            if (*zrs.lower_bound(qs[i].F) >= qs[i].S) res[i] -= Q - (i + 1);
        }
    }
}

int main() {
    ios_base::sync_with_stdio(false), cin.tie(0), cout.tie(0);
    
    cin >> N >> Q >> init;
    fori (i, Q) {
        string t; cin >> t;
        if (t == "toggle") {
            ll p; cin >> p; --p;
            qs[i] = {-1, p};
        } else {
            ll l, r; cin >> l >> r; --l; --r;
            qs[i] = {l, r};
        }
    }
    solve(false);
    seg.build();
    solve(true);
    fori (i, Q) if (qs[i].F != -1) cout << res[i] << '\n';

}

Subtask #1

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	20 ms	33280 KB	Output is correct
2	Correct	23 ms	33280 KB	Output is correct
3	Correct	21 ms	33280 KB	Output is correct
4	Correct	22 ms	33232 KB	Output is correct
5	Correct	19 ms	33280 KB	Output is correct
6	Correct	21 ms	33280 KB	Output is correct
7	Correct	22 ms	33280 KB	Output is correct

Subtask #2

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	203 ms	49400 KB	Output is correct
2	Correct	211 ms	49656 KB	Output is correct
3	Correct	284 ms	51192 KB	Output is correct
4	Correct	1002 ms	95372 KB	Output is correct
5	Correct	979 ms	105228 KB	Output is correct
6	Correct	998 ms	95116 KB	Output is correct
7	Correct	530 ms	80268 KB	Output is correct
8	Correct	1607 ms	185960 KB	Output is correct

Subtask #3

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	26 ms	33408 KB	Output is correct
2	Correct	21 ms	33460 KB	Output is correct
3	Correct	25 ms	33408 KB	Output is correct
4	Correct	24 ms	33536 KB	Output is correct
5	Correct	1320 ms	103156 KB	Output is correct
6	Correct	1285 ms	103308 KB	Output is correct
7	Correct	1012 ms	104460 KB	Output is correct
8	Correct	1861 ms	185856 KB	Output is correct
9	Correct	109 ms	42616 KB	Output is correct
10	Correct	129 ms	43512 KB	Output is correct
11	Correct	117 ms	43640 KB	Output is correct
12	Correct	576 ms	80268 KB	Output is correct
13	Correct	1870 ms	185804 KB	Output is correct

Subtask #4

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	25 ms	33408 KB	Output is correct
2	Correct	22 ms	33408 KB	Output is correct
3	Correct	22 ms	33400 KB	Output is correct
4	Correct	28 ms	33400 KB	Output is correct
5	Correct	707 ms	90252 KB	Output is correct
6	Correct	812 ms	92300 KB	Output is correct
7	Correct	1093 ms	94600 KB	Output is correct
8	Correct	1240 ms	97712 KB	Output is correct
9	Correct	224 ms	50296 KB	Output is correct
10	Correct	215 ms	50424 KB	Output is correct
11	Correct	217 ms	50424 KB	Output is correct
12	Correct	218 ms	50424 KB	Output is correct
13	Correct	220 ms	50424 KB	Output is correct
14	Correct	214 ms	50168 KB	Output is correct
15	Correct	512 ms	80268 KB	Output is correct
16	Correct	1909 ms	185868 KB	Output is correct

Subtask #5

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	20 ms	33280 KB	Output is correct
2	Correct	23 ms	33280 KB	Output is correct
3	Correct	21 ms	33280 KB	Output is correct
4	Correct	22 ms	33232 KB	Output is correct
5	Correct	19 ms	33280 KB	Output is correct
6	Correct	21 ms	33280 KB	Output is correct
7	Correct	22 ms	33280 KB	Output is correct
8	Correct	203 ms	49400 KB	Output is correct
9	Correct	211 ms	49656 KB	Output is correct
10	Correct	284 ms	51192 KB	Output is correct
11	Correct	1002 ms	95372 KB	Output is correct
12	Correct	979 ms	105228 KB	Output is correct
13	Correct	998 ms	95116 KB	Output is correct
14	Correct	530 ms	80268 KB	Output is correct
15	Correct	1607 ms	185960 KB	Output is correct
16	Correct	26 ms	33408 KB	Output is correct
17	Correct	21 ms	33460 KB	Output is correct
18	Correct	25 ms	33408 KB	Output is correct
19	Correct	24 ms	33536 KB	Output is correct
20	Correct	1320 ms	103156 KB	Output is correct
21	Correct	1285 ms	103308 KB	Output is correct
22	Correct	1012 ms	104460 KB	Output is correct
23	Correct	1861 ms	185856 KB	Output is correct
24	Correct	109 ms	42616 KB	Output is correct
25	Correct	129 ms	43512 KB	Output is correct
26	Correct	117 ms	43640 KB	Output is correct
27	Correct	576 ms	80268 KB	Output is correct
28	Correct	1870 ms	185804 KB	Output is correct
29	Correct	25 ms	33408 KB	Output is correct
30	Correct	22 ms	33408 KB	Output is correct
31	Correct	22 ms	33400 KB	Output is correct
32	Correct	28 ms	33400 KB	Output is correct
33	Correct	707 ms	90252 KB	Output is correct
34	Correct	812 ms	92300 KB	Output is correct
35	Correct	1093 ms	94600 KB	Output is correct
36	Correct	1240 ms	97712 KB	Output is correct
37	Correct	224 ms	50296 KB	Output is correct
38	Correct	215 ms	50424 KB	Output is correct
39	Correct	217 ms	50424 KB	Output is correct
40	Correct	218 ms	50424 KB	Output is correct
41	Correct	220 ms	50424 KB	Output is correct
42	Correct	214 ms	50168 KB	Output is correct
43	Correct	512 ms	80268 KB	Output is correct
44	Correct	1909 ms	185868 KB	Output is correct
45	Correct	117 ms	42940 KB	Output is correct
46	Correct	141 ms	43376 KB	Output is correct
47	Correct	457 ms	59640 KB	Output is correct
48	Correct	964 ms	94988 KB	Output is correct
49	Correct	121 ms	44408 KB	Output is correct
50	Correct	125 ms	44408 KB	Output is correct
51	Correct	120 ms	44516 KB	Output is correct
52	Correct	122 ms	44920 KB	Output is correct
53	Correct	122 ms	44920 KB	Output is correct
54	Correct	121 ms	44920 KB	Output is correct