oj.uz

Submission #517102

# Submission time Handle Problem Language Result Execution time Memory
517102 2022-01-22T14:14:03 Z Ai7081 Stations (IOI20_stations) C++17
8 / 100
 883 ms 616 KB 
#include <bits/stdc++.h>
using namespace std;
const int N = 1005;
const bool debug = 0;

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
    vector<int> ret(n);
    for (int i=0; i<n; i++) ret[i] = i+1;
    return ret;
}

int find_next_station(int s, int t, vector<int> c) {
    bitset<15> a, b;
    int tmp = s, s1 = 0, s2 = 0;
    while (tmp > 0) a[s1] = tmp%2, tmp = (tmp>>1), s1++;
    tmp = t;
    while (tmp > 0) b[s2] = tmp%2, tmp = (tmp>>1), s2++;

    if (debug) {
        cout << "bit s ";
        for (int i=0; i<s1; i++) cout << a[i];
        cout << endl << "bit t ";
        for (int i=0; i<s2; i++) cout << b[i];
        cout << endl;
    }

    bitset<15> go;
    int s3 = 0;
    for (int i=1; i<=min(s1, s2); i++) {
        if (a[s1-i] != b[s2-i]) break;
        go[i-1] = a[s1-i];
        s3 = i;
    }

    if (debug) {
        cout << "bit lca ";
        for (int i=0; i<s3; i++) cout << go[i];
        cout << endl;
    }

    int lca = 0;
    for (int i=0; i<s3; i++) lca += go[i] * (1<<(s3-1-i));
    if (debug) cout << "s " << s << " t " << t << " lca " << lca << endl;
    if (lca < s) return s/2;
    return (s<<1) + b[s2-1-s1];
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 562 ms 496 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 451 ms 400 KB Output is correct
2 Correct 553 ms 404 KB Output is correct
3 Correct 839 ms 404 KB Output is correct
4 Correct 476 ms 400 KB Output is correct
5 Correct 509 ms 616 KB Output is correct
6 Correct 360 ms 400 KB Output is correct

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 607 ms 400 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 883 ms 400 KB Output is correct
2 Incorrect 605 ms 480 KB Wrong query response.
3 Halted 0 ms 0 KB -

Subtask #5
0 / 61.0

# Verdict Execution time Memory Grader output
1 Incorrect 496 ms 488 KB Wrong query response.
2 Halted 0 ms 0 KB -