Submission #375089

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
375089	2021-03-09 02:30:53	wiwiho	Examination (JOI19_examination)	C++14	100 / 100	457 ms	15016 KiB

examination

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#include <bits/stdc++.h>
 
#define eb emplace_back
#define iter(a) a.begin(), a.end()
#define printv(a, b) { \
    for(auto pv : a) b << pv << " "; \
    b << "\n"; \
}
 
using namespace std;
 
typedef long long ll;
 
vector<int> BIT;
 
int lowbit(int x){
    return x & -x;
}
 
void modify(int x, int v){
    for(; x < BIT.size(); x += lowbit(x)){
        BIT[x] += v;
    }
}
 
int query(int x){
    int ans = 0;
    for(; x > 0; x -= lowbit(x)){
        ans += BIT[x];
    }
 
 
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Compilation message (stderr)

examination.cpp: In function 'void modify(int, int)':
examination.cpp:21:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(; x < BIT.size(); x += lowbit(x)){
      |           ~~^~~~~~~~~~~~

• Subtask 1: 2 / 2
• Subtask 2: 20 / 20
• Subtask 3: 21 / 21
• Subtask 4: 57 / 57