Submission #1095735

#	Time	Username	Problem	Language	Result	Execution time	Memory
1095735		cpptowin	Addk (eJOI21_addk)	C++17	100 / 100	236 ms	12624 KiB

Main

#include <bits/stdc++.h>
#define fo(i, d, c) for (int i = d; i <= c; i++)
#define fod(i, c, d) for (int i = c; i >= d; i--)
#define maxn 1000010
#define N 1010
#define fi first
#define se second
#define pb emplace_back
#define en cout << "\n";
#define int long long
#define inf (int)1e18
#define bitcount(x) __builtin_popcountll(x)
#define pii pair<int, int>
#define vii vector<pii>
#define lb(x) x & -x
#define bit(i, j) ((i >> j) & 1)
#define offbit(i, j) (i ^ (1LL << j))
#define onbit(i, j) (i | (1LL << j))
#define vi vector<int>
#define all(x) x.begin(), x.end()
#define ss(x) (int)x.size()
template <typename T1, typename T2>
bool minimize(T1 &a, T2 b)
{
    if (a > b)
    {
        a = b;
        return true;
    }
    return false;
}
template <typename T1, typename T2>
bool maximize(T1 &a, T2 b)
{
    if (a < b)
    {
        a = b;
        return true;
    }
    return false;
}
using namespace std;
const int nsqrt = 450;
const int mod = 1e9 + 7;
void add(int &x, int k)
{
    x += k;
    x %= mod;
    if (x < 0)
        x += mod;
}
void del(int &x, int k)
{
    x -= k;
    x %= mod;
    if (x < 0)
        x += mod;
}
struct SegmentTree
{
    vector<int> st;
    int n;
    /// real n
    SegmentTree(int _n = 0) : n(_n)
    {
        st.resize(4 * n + 10);
    }
    void resize(int _n)
    {
        n = _n;
        st.resize(4 * n + 10);
    }
    void update(int id, int l, int r, int x, int val)
    {
        if (x > r or x < l)
            return;
        if (l == r)
        {
            st[id] += val;
            return;
        }
        int mid = (l + r) >> 1;
        update(id << 1, l, mid, x, val);
        update(id << 1 | 1, mid + 1, r, x, val);
        st[id] = st[id << 1] + st[id << 1 | 1];
    }
    void assign(int id, int l, int r, int x, int val)
    {
        if (x > r or x < l)
            return;
        if (l == r)
        {
            st[id] = val;
            return;
        }
        int mid = (l + r) >> 1;
        assign(id << 1, l, mid, x, val);
        assign(id << 1 | 1, mid + 1, r, x, val);
        st[id] = st[id << 1] + st[id << 1 | 1];
    }
    int get(int id, int l, int r, int u, int v)
    {
        if (l > v || u > r)
            return 0;
        if (u <= l && r <= v)
            return st[id];
        int mid = (l + r) >> 1;
        return get(id << 1, l, mid, u, v) + get(id << 1 | 1, mid + 1, r, u, v);
    }
    int get(int l, int r)
    {
        return get(1, 1, n, l, r);
    }
    void update(int x, int val)
    {
        update(1, 1, n, x, val);
    }
    void assign(int x, int val)
    {
        assign(1, 1, n, x, val);
    }
} s, p;
int gets(int l, int r)
{
    return s.get(l, r) - (l - 1) * p.get(l, r);
}
int getp(int l, int r)
{
    return p.get(l, r);
}
int n, k, q, a[maxn];
main()
{
#define name "TASK"
    if (fopen(name ".inp", "r"))
    {
        freopen(name ".inp", "r", stdin);
        freopen(name ".out", "w", stdout);
    }
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> k;
    s.resize(n);
    p.resize(n);
    fo(i, 1, n)
    {
        cin >> a[i];
        p.assign(i, a[i]);
        s.assign(i, a[i] * i);
    }
    cin >> q;
    while (q--)
    {
        int t;
        cin >> t;
        if (t == 1)
        {
            vi id(k), val;
            for (int &it : id)
            {
                cin >> it;
                val.pb(a[it]);
            }
            fo(i, 0, k - 1)
            {
                a[id[i]] = val[(i + 1) % k];
                s.assign(id[i], a[id[i]] * id[i]);
                p.assign(id[i], a[id[i]]);
            }
        }
        else
        {
            int l, r, m;
            cin >> l >> r >> m;
            int ans = 0;
            if(r - l + 1 == m) ans = getp(l,r);
            else 
            if (r - l + 1 < 2 * m)
            {
                int len = (r - l + 1) - m + 1;
                // cout << len;en;
                // cout << gets(l,r - m);en;
                // cout << r - m + 1 << ' ' << r;en;
                // cout << r - len + 2 << ' ' << r;en;
                // cout << len * getp(r - m + 1, r);en;
                ans = gets(l, r - m) + len * getp(r - m + 1, r) - gets(r - len + 2, r);
            }
            else
            {
                // fo(i,1,n) cout << a[i] << 'x';en;
                // fo(i,1,n) cout << getp(i,i) << 'x';en;
                ans = gets(l, l + m - 2) + m * getp(l + m - 1, r) - gets(r - m + 2, r);
            }
            cout << ans;
            en;
        }
    }
}

Compilation message (stderr)

Main.cpp:132:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  132 | main()
      | ^~~~
Main.cpp: In function 'int main()':
Main.cpp:137:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  137 |         freopen(name ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:138:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  138 |         freopen(name ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 36 / 36
• Subtask 2: 56 / 56
• Subtask 3: 8 / 8