/ SeriousOJ /

Record Detail

Accepted


  
# Status Time Cost Memory Cost
#1 Accepted 1ms 532.0 KiB
#2 Accepted 1ms 532.0 KiB
#3 Accepted 1ms 532.0 KiB
#4 Accepted 1ms 580.0 KiB
#5 Accepted 1ms 532.0 KiB
#6 Accepted 1ms 524.0 KiB
#7 Accepted 220ms 17.77 MiB
#8 Accepted 196ms 17.699 MiB
#9 Accepted 193ms 17.66 MiB
#10 Accepted 197ms 17.613 MiB
#11 Accepted 163ms 17.27 MiB
#12 Accepted 248ms 18.27 MiB
#13 Accepted 137ms 17.812 MiB

Code

#include <bits/stdc++.h>
using namespace std;
#define SC               scanf
#define PF               printf
#define ull              unsigned long long
#define ld               long double
#define F                first
#define S                second
#define pb               push_back
#define sort_a(a)        sort(a.begin(),a.end());
#define sort_d(a)        sort(a.rbegin(),a.rend());
#define READ(f)          freopen(f, "r", stdin)
#define WRITE(f)         freopen(f, "w", stdout)
#define rev(s)           reverse(s.begin(),s.end())
#define P(ok)            cout << (ok ? "YES\n": "NO\n")
#define __Heart__              ios_base :: sync_with_stdio(false); cin.tie(NULL);
#define ll long long
typedef pair< ll , ll>                   PII;
const int Mx = 100005 ;
const int Mode = 1000000007 ;
ll n , q , type , l , r , pos , value ,  BIT[25][Mx];
ll BigMod(ll b,ll p)
{
    if(p == 0) return 1;
    if( p % 2 == 0)
    {
        ll ret = BigMod(b, p/2);
        return ((ret % Mode ) *(ret % Mode))% Mode;
    }
    else return ((b % Mode)*(BigMod(b, p-1 ) % Mode))% Mode;

}
void update(ll node , ll i , ll value){
   while(i <= n){
    BIT[node][i] += value ;
    i += i & -i ;
   }
}
ll Ask(ll node , ll i) {
    ll sum = 0 ;
    while(i > 0){
        sum += BIT[node][i] ;
        i -= i & -i ;
    }
    return sum ;
}
void solve()
{
   cin >> n >> q ; ll A[n + 5]  ;
   for(int i = 1 ; i <= n ; i++){
    cin >> A[i] ;
    for(int j = 0 ; j <= 20 ; j++){
        update(j, i, ((A[i] >> j) & 1));
    }
   }
   while(q--){
    cin >> type ;
    if(type == 1) {
        cin >> pos >> value ;
        for(int i = 0 ; i <= 20 ; i++){
            ll bit_before = (A[pos] >> i) & 1;
            ll bit_after = ((A[pos] ^ value) >> i) & 1;
            update(i, pos, bit_after - bit_before);
        }
        A[pos] ^= value;

    }
    else {
        cin >> l >> r ;
        ll  totalBit = 0;
        for(int i = 0 ; i <= 20 ; i++){
           ll countBit = Ask(i , r) - Ask(i , l - 1) ;
            if(countBit > 0) {
                totalBit = (totalBit + (1LL << i)) % Mode ;
            }
        }
       // cout <<"Before Shifting " << totalBit << endl ;
        ll Ans = (totalBit * BigMod(2 , (r - l))) % Mode;
        cout << Ans << "\n" ;
    }
   }
}
int main()
{
     __Heart__
     int t ; t = 1 ; while(t--) solve() ;
}

Information

Submit By
Type
Submission
Problem
P1183 The Sorcerer’s Subsequence Sum
Language
C++17 (G++ 13.2.0)
Submit At
2025-03-22 09:33:23
Judged At
2025-03-22 09:33:23
Judged By
Score
100
Total Time
248ms
Peak Memory
18.27 MiB