Submission #942397

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
942397	2024-03-10 15:08:39	_callmelucian	Two Currencies (JOI23_currencies)	C++14	100 / 100	1039 ms	53512 KiB

currencies

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pl;
typedef pair<int,int> pii;
typedef tuple<int,int,int> tt;
#define all(a) a.begin(), a.end()
#define filter(a) a.erase(unique(all(a)), a.end())
const int mn = 1e5 + 5;
struct BIT {
    vector<ll> tr;
    BIT (int sz = 0) : tr(sz + 1) {}
    int p (int k) { return k & -k; }
    void update (int k, ll val) {
        //cerr << "update id " << k << "\n";
        for (; k < tr.size(); k += p(k)) tr[k] += val;
    }
    ll preSum (int k, ll ans = 0) {
        //cerr << "query id " << k << "\n";
        for (k; k; k -= p(k)) ans += tr[k];
        return ans;
    }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

currencies.cpp: In member function 'void BIT::update(int, ll)':
currencies.cpp:23:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         for (; k < tr.size(); k += p(k)) tr[k] += val;
      |                ~~^~~~~~~~~~~
currencies.cpp: In member function 'll BIT::preSum(int, ll)':
currencies.cpp:28:14: warning: statement has no effect [-Wunused-value]
   28 |         for (k; k; k -= p(k)) ans += tr[k];
      |              ^

• Subtask 1: 10 / 10
• Subtask 2: 28 / 28
• Subtask 3: 30 / 30
• Subtask 4: 32 / 32