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Submission #959828

# Submission time Handle Problem Language Result Execution time Memory
959828 2024-04-09T07:30:30 Z Neco_arc XORanges (eJOI19_xoranges) C++17
55 / 100
 134 ms 65536 KB 
#include <bits/stdc++.h>

#define ll long long
#define ull unsigned long long
#define all(x) x.begin(), x.end()
#define Neco "XORanges"
#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];

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

struct BIT {
    struct Node {
        int Sum, Sqr, 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].Sqr = md(bit[x].Sqr + 1ll * val * val);
            bit[x].Sum = md(bit[x].Sum + val);

            x += (x & -x);
        }
    }

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

            l -= (l & -l);
        }

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

            r -= (r & -r);
        }

        return md(ans.Sum * (L + R) - ans.Sqr + 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:106:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  106 |         freopen(Neco".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
xoranges.cpp:107:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  107 |         freopen(Neco".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1624 KB Output is correct
2 Correct 1 ms 1624 KB Output is correct
3 Correct 2 ms 1624 KB Output is correct
4 Correct 1 ms 1628 KB Output is correct
5 Correct 1 ms 1628 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1624 KB Output is correct
2 Correct 3 ms 1624 KB Output is correct
3 Correct 2 ms 1628 KB Output is correct
4 Correct 2 ms 1864 KB Output is correct
5 Correct 2 ms 1628 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1624 KB Output is correct
2 Correct 1 ms 1624 KB Output is correct
3 Correct 2 ms 1624 KB Output is correct
4 Correct 1 ms 1628 KB Output is correct
5 Correct 1 ms 1628 KB Output is correct
6 Correct 2 ms 1624 KB Output is correct
7 Correct 3 ms 1624 KB Output is correct
8 Correct 2 ms 1628 KB Output is correct
9 Correct 2 ms 1864 KB Output is correct
10 Correct 2 ms 1628 KB Output is correct
11 Correct 12 ms 3164 KB Output is correct
12 Correct 12 ms 3164 KB Output is correct
13 Correct 11 ms 3164 KB Output is correct
14 Correct 11 ms 3164 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 134 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1624 KB Output is correct
2 Correct 1 ms 1624 KB Output is correct
3 Correct 2 ms 1624 KB Output is correct
4 Correct 1 ms 1628 KB Output is correct
5 Correct 1 ms 1628 KB Output is correct
6 Correct 2 ms 1624 KB Output is correct
7 Correct 3 ms 1624 KB Output is correct
8 Correct 2 ms 1628 KB Output is correct
9 Correct 2 ms 1864 KB Output is correct
10 Correct 2 ms 1628 KB Output is correct
11 Correct 12 ms 3164 KB Output is correct
12 Correct 12 ms 3164 KB Output is correct
13 Correct 11 ms 3164 KB Output is correct
14 Correct 11 ms 3164 KB Output is correct
15 Runtime error 134 ms 65536 KB Execution killed with signal 9
16 Halted 0 ms 0 KB -