Submission #852162

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
852162	2023-09-21 10:57:06	TS_2392	Examination (JOI19_examination)	C++14	100 / 100	443 ms	138868 KiB

examination

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#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
const int N = 1e5 + 3, Q = 1e5 + 3, Bz = 320;
struct query{
    int x, y, z, ind;
} qry[Q], cx_qry[Q], cy_qry[Q];
int n, q, res[Q], mark[N];
int suf[N], pos[N], ans[Bz][Q], num_bl;
pii student[N], a[N];
void preprocess(int idx){
    int l = max(idx * Bz, 1), r = min((idx + 1) * Bz - 1, n);
    int len = r - l + 1;
    for(int i = l; i <= r; ++i){
        a[i - l + 1] = student[i];
    }
    sort(a + 1, a + 1 + len);
    for(int j = 1, i = 1; i <= q; ++i){
        while(j <= len && a[j].fi < cx_qry[i].x) ++j;
        pos[cx_qry[i].ind] = j;
    }
    for(int i = 1; i <= len; ++i){
        a[i] = {a[i].se, i};
        mark[i] = suf[i] = 0;
    }
    suf[len + 1] = 0;
 
 
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• Subtask 1: 2 / 2
• Subtask 2: 20 / 20
• Subtask 3: 21 / 21
• Subtask 4: 57 / 57