Submission #65015

#	Time	Username	Problem	Language	Result	Execution time	Memory
65015		forestryks	Relativnost (COCI15_relativnost)	C++14	14 / 140	1865 ms	33792 KiB

relativnost

///////////////////////////////////////////////////////////////////////////////////////////////
#include <bits/stdc++.h>
using namespace std;

// #define int long long

#define FAST_IO ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)
#define FILE_IO(x) freopen((string(x) + ".in").c_str(), "r", stdin); freopen((string(x) + ".out").c_str(), "w", stdout)
#define f first
#define s second
#define x1 x1qwer
#define y1 y1qwer
#define right right123
#define left left123
#define foreach(it, v) for (auto it : v)
#define rep(it, n) for (int it = 0; it < n; ++it)
#define forin(it, l, r) for (int it = l; it < r; ++it)
#define all(x) x.begin(), x.end()

typedef long long ll;
typedef unsigned long long ull;
typedef double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const double DINF = numeric_limits<double>::infinity();
const ll MOD = 1e9 + 7;
const double EPS = 1e-7;
ll gcd(ll a, ll b) { return b ? gcd(b, a % b) : a; }
mt19937 mmtw_(MOD);
uniform_int_distribution<ll> rd_;
ll randomll() { return rd_(mmtw_);}
ll rnd(ll x, ll y) { return rd_(mmtw_) % (y - x + 1) + x; }
template <class T> T fact(T n) { if (n == 1) return 1; return n * fact(n - 1); }
////////////////////////////////////////////////////////////////////////////////////////////////

const int mod = 10007;
const int MAXN = 1e5 + 5;

int n, c;
int a[MAXN];
int b[MAXN];
int t[MAXN * 4][21];

void upd(int v) {
    fill(t[v], t[v] + c + 1, 0);

    int left = v * 2 + 1;
    int right = v * 2 + 2;
    for (int i = 0; i <= c; ++i) {
        for (int j = 0; j <= c; ++j) {
            t[v][min(i + j, c)] += t[left][i] * t[right][j];
        }
    }

    for (int i = 0; i <= c; ++i) {
        t[v][i] %= mod;
    }
}

void build(int v, int tl, int tr) {
    if (tr - tl == 1) {
        t[v][0] = b[tl];
        t[v][1] = a[tl];
        return;
    }

    int tm = tl + (tr - tl) / 2;
    build(v * 2 + 1, tl, tm);
    build(v * 2 + 2, tm, tr);
    upd(v);
}

void update(int v, int tl, int tr, int p) {
    if (tr - tl == 1) {
        t[v][0] = b[tl];
        t[v][1] = a[tl];
        return;
    }

    int tm = tl + (tr - tl) / 2;
    if (p < tm) {
        update(v * 2 + 1, tl, tm, p);
    } else {
        update(v * 2 + 2, tm, tr, p);
    }
    upd(v);
}

int main() {
    FAST_IO;
    cin >> n >> c;
    rep(i, n) {
        cin >> a[i];
        a[i] %= mod;
    }
    rep(i, n) {
        cin >> b[i];
        b[i] %= mod;
    }

    build(0, 0, n);

    int q;
    cin >> q;
    while (q--) {
        int p, aa, bb;
        cin >> p >> aa >> bb;
        p--; aa %= mod; bb %= mod;
        
        a[p] = aa;
        b[p] = bb;
        update(0, 0, n, p);

        cout << t[0][c] << '\n';
    }
}

• Subtask 1: 14 / 140