# | TimeUTC-0 | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1038356 | Thunnus | Growing Trees (BOI11_grow) | C++17 | 95 ms | 4204 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
using i64 = long long;
#define int i64
#define vi vector<int>
#define vvi vector<vi>
#define vb vector<bool>
#define pii pair<int, int>
#define fi first
#define se second
#define sz(x) (int)(x).size()
struct BIT{
vi bit;
BIT(int n) : bit(n + 2) {}
void add(int idx, int val){
for(++idx; idx < sz(bit); idx += idx & -idx){
bit[idx] += val;
}
}
int sum(int idx){
int ret = 0;
for(++idx; idx; idx -= idx & -idx)
ret += bit[idx];
return ret;
}
};
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