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Submission #959834

# Submission time Handle Problem Language Result Execution time Memory
959834 2024-04-09T07:35:23 Z vjudge1 XORanges (eJOI19_xoranges) C++17
100 / 100
 953 ms 26000 KB 
#include <bits/stdc++.h>

#define ll long long
#define ull unsigned long long
#define all(x) x.begin(), x.end()
#define Neco "XORanges"
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#define resp(x) sort(all(x)), x.resize(unique(all(x)) - x.begin())
#define getbit(x,i) ((x >> i)&1)
#define _left id * 2, l, mid
#define _right id * 2 + 1, mid + 1, r
#define cntbit(x) __builtin_popcountll(x)
#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 maxn (int) 2e5 + 7

using namespace std;

const ll mod = 2; //972663749
const ll base = 911382323;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

ll GetRandom(ll l, ll r)
{
    return uniform_int_distribution<ll> (l, r)(rng);
}

int n, q;
int a[maxn];

int md (int x) { return ((x % mod) + mod) % mod; }

struct BIT {
    struct Node {
        short Sum, Sl;
    } bit[maxn];

    void update(int x, ll val) {
        int w = val < 0 ? -1 : 1;
        while(x < maxn) {
            bit[x].Sl = md(bit[x].Sl + w);
            bit[x].Sum = md(bit[x].Sum + val);
            x += (x & -x);
        }
    }

    int get(int l, int r, Node ans = {0, 0}) {
        --l;
        ll L = l + 1, R = r;
        while(l > 0) {
            ans.Sl = md(ans.Sl - bit[l].Sl);
            ans.Sum = md(ans.Sum - bit[l].Sum);

            l -= (l & -l);
        }

        while(r > 0) {
            ans.Sl = md(ans.Sl + bit[r].Sl);
            ans.Sum = md(ans.Sum + bit[r].Sum);

            r -= (r & -r);
        }

        return md(ans.Sum * (L + R) - ans.Sum + ans.Sl * (-L * R + R - L + 1));
    }
} Bit[30];

void updt(int id, int val) {
    fi(i, 0, 29) if(getbit(a[id], i)) Bit[i].update(id, val * id);
}

void solve()
{

    cin >> n >> q;
    fi(i, 1, n) cin >> a[i], updt(i, 1);

    fi(i, 1, q) {
        int type, x, y;
        cin >> type >> x >> y;

        if(type == 1) updt(x, -1), a[x] = y, updt(x, 1);
        else {
            int ans = 0;
            fi(i, 0, 29) ans += (1 << i) * Bit[i].get(x, y);
            cout << ans << '\n';
        }
    }


}


int main()
{

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    if(fopen(Neco".inp", "r")) {
        freopen(Neco".inp", "r", stdin);
        freopen(Neco".out", "w", stdout);
    }


    int nTest = 1;
//    cin >> nTest;


    while(nTest--)
    {
        solve();
    }


    return 0;
}

Compilation message

xoranges.cpp: In function 'int main()':
xoranges.cpp:104:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  104 |         freopen(Neco".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
xoranges.cpp:105:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  105 |         freopen(Neco".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1372 KB Output is correct
2 Correct 1 ms 1372 KB Output is correct
3 Correct 1 ms 1372 KB Output is correct
4 Correct 1 ms 1372 KB Output is correct
5 Correct 1 ms 1368 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1372 KB Output is correct
2 Correct 2 ms 1372 KB Output is correct
3 Correct 2 ms 1372 KB Output is correct
4 Correct 2 ms 1368 KB Output is correct
5 Correct 2 ms 1372 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1372 KB Output is correct
2 Correct 1 ms 1372 KB Output is correct
3 Correct 1 ms 1372 KB Output is correct
4 Correct 1 ms 1372 KB Output is correct
5 Correct 1 ms 1368 KB Output is correct
6 Correct 2 ms 1372 KB Output is correct
7 Correct 2 ms 1372 KB Output is correct
8 Correct 2 ms 1372 KB Output is correct
9 Correct 2 ms 1368 KB Output is correct
10 Correct 2 ms 1372 KB Output is correct
11 Correct 12 ms 1884 KB Output is correct
12 Correct 9 ms 1884 KB Output is correct
13 Correct 7 ms 1884 KB Output is correct
14 Correct 8 ms 1992 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 931 ms 25904 KB Output is correct
2 Correct 897 ms 25868 KB Output is correct
3 Correct 953 ms 25996 KB Output is correct
4 Correct 257 ms 25828 KB Output is correct
5 Correct 252 ms 26000 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1372 KB Output is correct
2 Correct 1 ms 1372 KB Output is correct
3 Correct 1 ms 1372 KB Output is correct
4 Correct 1 ms 1372 KB Output is correct
5 Correct 1 ms 1368 KB Output is correct
6 Correct 2 ms 1372 KB Output is correct
7 Correct 2 ms 1372 KB Output is correct
8 Correct 2 ms 1372 KB Output is correct
9 Correct 2 ms 1368 KB Output is correct
10 Correct 2 ms 1372 KB Output is correct
11 Correct 12 ms 1884 KB Output is correct
12 Correct 9 ms 1884 KB Output is correct
13 Correct 7 ms 1884 KB Output is correct
14 Correct 8 ms 1992 KB Output is correct
15 Correct 931 ms 25904 KB Output is correct
16 Correct 897 ms 25868 KB Output is correct
17 Correct 953 ms 25996 KB Output is correct
18 Correct 257 ms 25828 KB Output is correct
19 Correct 252 ms 26000 KB Output is correct
20 Correct 796 ms 25652 KB Output is correct
21 Correct 816 ms 25544 KB Output is correct
22 Correct 829 ms 25452 KB Output is correct
23 Correct 271 ms 25684 KB Output is correct
24 Correct 278 ms 25680 KB Output is correct