oj.uz

Submission #639174

# Submission time Handle Problem Language Result Execution time Memory
639174 2022-09-08T20:01:39 Z phoenix Secret (JOI14_secret) C++17
100 / 100
 454 ms 4468 KB 
#include<bits/stdc++.h>
#include "secret.h"

using namespace std;

const int N = 1000;
const int logN = 20;

// int opCount = 0;
// int Secret(int x, int y) {
//     opCount++;
//     return (x + y) % (1000000000);
// }

// int RES[ N ][ N ];

int lef[ N ][ logN ], rig[ N ][ logN ];
void build(int l, int r, int lev, int a[]) {
    if(l == r) {
        lef[ l ][ lev ] = a[ l ];
        rig[ r ][ lev ] = a[ r ];
        return;
    }
    int m = (l + r) / 2;

    for(int i = m + 1;i <= r;i++) {
        if(i == m + 1) rig[ i ][ lev ] = a[ i ];
        else rig[ i ][ lev ] = Secret(rig[i - 1][ lev ], a[ i ]);
    }

    for(int i = m;i >= l;i--) {
        if(i == m) lef[ i ][ lev ] = a[ i ];
        else lef[ i ][ lev ] = Secret(a[ i ], lef[i + 1][ lev ]);
    }
    build(l, m, lev + 1, a);
    build(m + 1, r, lev + 1, a);

}

int query(int ql, int qr, int l, int r, int lev) {
    if(l == r) 
        return lef[ l ][ lev ];
    int m = (l + r) / 2;

    if(ql <= m && m < qr) {
        return Secret(lef[ ql ][ lev ], rig[ qr ][ lev ]); 
    }
    if(qr <= m)
        return query(ql, qr, l, m, lev + 1);
    return query(ql, qr, m + 1, r, lev + 1);
}
int n;
void Init(int nn, int a[]) {
    n = nn;
    build(0, n - 1, 0, a);
}

int Query(int l, int r) {
    return query(l, r, 0, n - 1, 0);
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 129 ms 2360 KB Output is correct - number of calls to Secret by Init = 3578, maximum number of calls to Secret by Query = 1
2 Correct 121 ms 2452 KB Output is correct - number of calls to Secret by Init = 3586, maximum number of calls to Secret by Query = 1
3 Correct 125 ms 2380 KB Output is correct - number of calls to Secret by Init = 3595, maximum number of calls to Secret by Query = 1
4 Correct 449 ms 4400 KB Output is correct - number of calls to Secret by Init = 7969, maximum number of calls to Secret by Query = 1
5 Correct 438 ms 4468 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
6 Correct 442 ms 4356 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
7 Correct 454 ms 4400 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
8 Correct 445 ms 4380 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
9 Correct 445 ms 4328 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1
10 Correct 440 ms 4456 KB Output is correct - number of calls to Secret by Init = 7978, maximum number of calls to Secret by Query = 1