Submission #971450

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
971450	2024-04-28 14:14:10	andro	Examination (JOI19_examination)	C++14	20 / 100	94 ms	18540 KiB

examination

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#include <bits/stdc++.h>.
#define int long long
using namespace std;
const int N = 4e5 + 5;
struct fenw {
    int t[N];
    void add(int i, int val){
        for(; i < N; i += i & - i) {
            t[i] += val;
        }
    }
    int query(int i) {
        int ans = 0;
        for(; i > 0; i -= i & - i) {
            ans += t[i];
        }
        return ans;
    }
    int query(int l, int r) {
        return query(r) - query(l - 1);
    }
}fenw1, fenw2;
signed main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
 
 
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Compilation message (stderr)

examination.cpp:1:25: warning: extra tokens at end of #include directive
    1 | #include <bits/stdc++.h>.
      |                         ^
examination.cpp: In function 'int main()':
examination.cpp:108:13: warning: unused variable 'ans' [-Wunused-variable]
  108 |         int ans = 0;
      |             ^~~

• Subtask 1: 0 / 2
• Subtask 2: 20 / 20
• Subtask 3: 0 / 21
• Subtask 4: 0 / 57