oj.uz

Submission #850140

# Submission time Handle Problem Language Result Execution time Memory
850140 2023-09-15T19:53:40 Z divad Speedrun (RMI21_speedrun) C++14
100 / 100
 116 ms 2032 KB 
#include <bits/stdc++.h>
#include "speedrun.h"
#define pii pair<int, int>
using namespace std;

const int NMAX = 1002;
vector<int> v[NMAX];
int n,l,t[NMAX],tour[NMAX],pos[NMAX],k;
int st[NMAX];

void euler(int nod, int tata = -1){
    if(tata > 0){
        t[nod] = tata;
    }
    if(!pos[nod]){
        tour[++k] = nod;
        pos[nod] = k;
    }
    for(int fiu: v[nod]){
        if(fiu == tata){
            continue;
        }
        euler(fiu, nod);
    }
}

pii split(int x){
    x >>= 1;
    int mask = (1<<10)-1;
    return {x&mask, x>>10};
}

void assignHints (int subtask , int N, int A[], int B[]){
    setHintLen(20);
    n = N;
    for(int i = 1; i < N; i++){
        v[A[i]].push_back(B[i]);
        v[B[i]].push_back(A[i]);
    }
    euler(1);
    for(int i = 1; i <= n; i++){
        int val = t[i] + ((tour[pos[i]+1]) << 10);
        val <<= 1;
        pii aux = split(val);
        for(int j = 1; j <= 20; j++){
            int bt = ((val>>j)&1);
            setHint(i, j, bt);
        }
    }
}

int getWholeHint(){
    int ans = 0;
    for(int i = 1; i <= 20; i++){
        ans += (1<<i)*getHint(i);
    }
    return ans;
}

void speedrun(int subtask , int N, int start){
    n = N;
    l = getLength();
    while(start != 1){
        int val = getWholeHint();
        start = split(val).first;
        goTo(start);
    }
    int vf = 0;
    st[++vf] = 1;
    int cnt = 1;
    while(cnt != n){
        int nxt = split(getWholeHint()).second;
        while(!goTo(nxt)){
            vf--;
            goTo(st[vf]);
        }
        goTo(nxt);
        st[++vf] = nxt;
        cnt++;
    }
}

Compilation message

speedrun.cpp: In function 'void assignHints(int, int, int*, int*)':
speedrun.cpp:44:13: warning: variable 'aux' set but not used [-Wunused-but-set-variable]
   44 |         pii aux = split(val);
      |             ^~~

Subtask #1
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 112 ms 1608 KB Output is correct
2 Correct 116 ms 1620 KB Output is correct
3 Correct 112 ms 1752 KB Output is correct
4 Correct 104 ms 1620 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 112 ms 1364 KB Output is correct
2 Correct 96 ms 1508 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 95 ms 1376 KB Output is correct
2 Correct 100 ms 1616 KB Output is correct
3 Correct 96 ms 1412 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 97 ms 1772 KB Output is correct
2 Correct 102 ms 1540 KB Output is correct
3 Correct 94 ms 1364 KB Output is correct
4 Correct 109 ms 1620 KB Output is correct
5 Correct 105 ms 1520 KB Output is correct
6 Correct 96 ms 1532 KB Output is correct

Subtask #5
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 113 ms 1864 KB Output is correct
2 Correct 100 ms 1360 KB Output is correct
3 Correct 106 ms 2032 KB Output is correct
4 Correct 89 ms 1620 KB Output is correct
5 Correct 94 ms 1280 KB Output is correct
6 Correct 99 ms 1540 KB Output is correct
7 Correct 96 ms 1104 KB Output is correct