Submission #997699

#	Time	Username	Problem	Language	Result	Execution time	Memory
997699		cpptowin	Inspections (NOI23_inspections)	C++17	29 / 100	1177 ms	1048576 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 10000010
#define N 5010
#define fi first
#define se second
#define pb emplace_back
#define en cout << "\n";
#define int long long
#define inf (int)1e9
#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()
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;
int n, m, q, l[maxn], r[maxn], s[maxn];
namespace sub2
{
    struct BIT
    {
        int t[maxn];
        void up(int x, int val)
        {
            for (; x; x -= lb(x))
                t[x] += val;
        }
        int get(int x)
        {
            int ans = 0;
            for (; x < maxn; x += lb(x))
                ans += t[x];
            return ans;
        }
    } t;
    vi adj[N];
    void solve()
    {
        vi v;
        fo(i, 1, m)
        {
            fo(j, l[i], r[i])
            {
                v.pb(j);
                adj[j].pb((int)v.size());
            }
        }
        fo(i, 1, q) minimize(s[i], v.size() + 5);
        fo(i, 1, n)
        {
            fo(j, 1, (int)adj[i].size() - 1)
            {
                t.up(adj[i][j] - adj[i][j - 1], 1);
            }
        }
        fo(i, 1, q) cout << t.get(s[i] + 1) << ' ';
    }
}
namespace sub4
{
    int su[maxn];
    vector<array<int, 3>> range;
    vi save;
    int p[maxn];
    void solve()
    {
        save.pb(1);
        fo(i, 1, m)
        {
            save.pb(l[i]);
            if (r[i] != n)
                save.pb(r[i] + 1);
        }
        sort(all(save));
        save.erase(unique(all(save)), save.end());
        fo(i, 0, (int)save.size() - 2)
            range.push_back({save[i], save[i + 1] - 1, inf});
        range.push_back({save.back(), n, inf});
        fo(i, 2, m) p[i] = p[i - 1] + r[i - 1] - l[i - 1] + 1;
        vi nen;
        vii up;
        fo(i, 1, m)
        {
            int sum = 0;
            int lb = lower_bound(all(save), l[i]) - save.begin();
            while (range[lb][1] <= r[i] and lb < range.size())
            {
                if (range[lb][2] != inf)
                {
                    nen.pb(p[i] - range[lb][2] + sum);
                    up.pb(p[i] - range[lb][2] + sum, range[lb][1] - range[lb][0] + 1);
                }
                range[lb][2] = p[i] + sum;
                sum += range[lb][1] - range[lb][0] + 1;
                lb++;
            }
        }
        fo(i, 1, q) nen.pb(s[i] + 1);
        sort(all(nen));
        nen.erase(unique(all(nen)), nen.end());
        for (auto [x, val] : up)
        {
            x = lower_bound(all(nen), x) - nen.begin() + 1;
            su[x] += val;
        }
        fod(i, maxn - 2, 0) su[i] += su[i + 1];
        fo(i, 1, q)
        {
            s[i] = lower_bound(all(nen), s[i] + 1) - nen.begin() + 1;
            cout << su[s[i]] << ' ';
        }
    }
}
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 >> m >> q;
    fo(i, 1, m) cin >> l[i] >> r[i];
    fo(i, 1, q) cin >> s[i];
    if (m <= 200)
        return sub4::solve(), 0;
    sub2::solve();
}

Compilation message (stderr)

Main.cpp: In function 'void sub4::solve()':
Main.cpp:112:48: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::array<long long int, 3> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |             while (range[lb][1] <= r[i] and lb < range.size())
      |                                             ~~~^~~~~~~~~~~~~~
Main.cpp: At global scope:
Main.cpp:140:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  140 | main()
      | ^~~~
Main.cpp: In instantiation of 'bool minimize(T1&, T2) [with T1 = long long int; T2 = long unsigned int]':
Main.cpp:74:48:   required from here
Main.cpp:23:11: warning: comparison of integer expressions of different signedness: 'long long int' and 'long unsigned int' [-Wsign-compare]
   23 |     if (a > b)
      |         ~~^~~
Main.cpp: In function 'int main()':
Main.cpp:145:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  145 |         freopen(name ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:146:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  146 |         freopen(name ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 11 / 11
• Subtask 2: 18 / 18
• Subtask 3: 0 / 22
• Subtask 4: 0 / 26
• Subtask 5: 0 / 23