oj.uz

Submission #796790

# Submission time Handle Problem Language Result Execution time Memory
796790 2023-07-28T18:13:14 Z alexander707070 Stations (IOI20_stations) C++14
100 / 100
 780 ms 872 KB 
#include<bits/stdc++.h>
#define MAXN 1007
using namespace std;

int n,st,et,cnt;
vector<int> sol,v[MAXN],w;
int tim,in[MAXN],out[MAXN],z[2*MAXN];

void dfs(int x,int p,int dep){
    in[x]=tim; tim++;
    for(int i=0;i<v[x].size();i++){
        if(v[x][i]!=p)dfs(v[x][i],x,dep+1);
    }
    out[x]=tim; tim++;

    if(dep%2==0)sol[x]=in[x];
    else sol[x]=out[x];
}

vector<int> label(int N, int k,vector<int> from,vector<int> to){
    n=N;
    sol.resize(n);
    for(int i=0;i<n;i++)v[i].clear();
    tim=0;

    for(int i=0;i<n-1;i++){
        v[from[i]].push_back(to[i]);
        v[to[i]].push_back(from[i]);
    }

    dfs(0,-1,0);
    
    w=sol;
    sort(w.begin(),w.end());
    
    for(int i=0;i<w.size();i++){
        z[w[i]]=i;
    }
    
    for(int i=0;i<sol.size();i++)sol[i]=z[sol[i]];

    return sol;
}

int find_next_station(int s, int t,vector<int> c){
    if(s==0){
        st=s+1;
        for(int i=0;i<c.size();i++){
            if(t>=st and t<=c[i])return c[i];
            st=c[i]+1;
        }
    }else if(s<c[0]){
        st=s+1;
        for(int i=0;i<c.size()-1;i++){
            if(t>=st and t<=c[i])return c[i];
            st=c[i]+1;
        }
        return c[c.size()-1];
    }else{
        et=s-1;
        for(int i=c.size()-1;i>=1;i--){
            if(t>=c[i] and t<=et)return c[i];
        }
        return c[0];
    }
}

Compilation message

stations.cpp: In function 'void dfs(int, int, int)':
stations.cpp:11:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |     for(int i=0;i<v[x].size();i++){
      |                 ~^~~~~~~~~~~~
stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:36:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for(int i=0;i<w.size();i++){
      |                 ~^~~~~~~~~
stations.cpp:40:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |     for(int i=0;i<sol.size();i++)sol[i]=z[sol[i]];
      |                 ~^~~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:48:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |         for(int i=0;i<c.size();i++){
      |                     ~^~~~~~~~~
stations.cpp:54:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |         for(int i=0;i<c.size()-1;i++){
      |                     ~^~~~~~~~~~~
stations.cpp:66:1: warning: control reaches end of non-void function [-Wreturn-type]
   66 | }
      | ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 406 ms 672 KB Output is correct
2 Correct 405 ms 672 KB Output is correct
3 Correct 562 ms 420 KB Output is correct
4 Correct 482 ms 420 KB Output is correct
5 Correct 483 ms 544 KB Output is correct
6 Correct 418 ms 656 KB Output is correct
7 Correct 316 ms 548 KB Output is correct
8 Correct 2 ms 748 KB Output is correct
9 Correct 3 ms 620 KB Output is correct
10 Correct 0 ms 500 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 414 ms 524 KB Output is correct
2 Correct 341 ms 556 KB Output is correct
3 Correct 629 ms 532 KB Output is correct
4 Correct 515 ms 548 KB Output is correct
5 Correct 559 ms 532 KB Output is correct
6 Correct 385 ms 532 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 502 ms 680 KB Output is correct
2 Correct 411 ms 676 KB Output is correct
3 Correct 692 ms 528 KB Output is correct
4 Correct 608 ms 544 KB Output is correct
5 Correct 480 ms 548 KB Output is correct
6 Correct 286 ms 548 KB Output is correct
7 Correct 417 ms 544 KB Output is correct
8 Correct 1 ms 628 KB Output is correct
9 Correct 3 ms 620 KB Output is correct
10 Correct 0 ms 492 KB Output is correct
11 Correct 426 ms 544 KB Output is correct
12 Correct 371 ms 724 KB Output is correct
13 Correct 312 ms 660 KB Output is correct
14 Correct 376 ms 548 KB Output is correct
15 Correct 33 ms 620 KB Output is correct
16 Correct 58 ms 580 KB Output is correct
17 Correct 68 ms 536 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 780 ms 536 KB Output is correct
2 Correct 496 ms 548 KB Output is correct
3 Correct 462 ms 548 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 456 KB Output is correct
6 Correct 0 ms 620 KB Output is correct
7 Correct 518 ms 600 KB Output is correct
8 Correct 772 ms 544 KB Output is correct
9 Correct 500 ms 696 KB Output is correct
10 Correct 408 ms 548 KB Output is correct
11 Correct 5 ms 492 KB Output is correct
12 Correct 3 ms 620 KB Output is correct
13 Correct 2 ms 492 KB Output is correct
14 Correct 2 ms 492 KB Output is correct
15 Correct 1 ms 620 KB Output is correct
16 Correct 483 ms 532 KB Output is correct
17 Correct 282 ms 572 KB Output is correct
18 Correct 462 ms 544 KB Output is correct
19 Correct 423 ms 420 KB Output is correct
20 Correct 454 ms 420 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 471 ms 660 KB Output is correct
2 Correct 333 ms 660 KB Output is correct
3 Correct 518 ms 548 KB Output is correct
4 Correct 425 ms 548 KB Output is correct
5 Correct 330 ms 548 KB Output is correct
6 Correct 377 ms 664 KB Output is correct
7 Correct 354 ms 548 KB Output is correct
8 Correct 1 ms 620 KB Output is correct
9 Correct 3 ms 492 KB Output is correct
10 Correct 1 ms 620 KB Output is correct
11 Correct 367 ms 548 KB Output is correct
12 Correct 391 ms 536 KB Output is correct
13 Correct 681 ms 536 KB Output is correct
14 Correct 564 ms 532 KB Output is correct
15 Correct 432 ms 548 KB Output is correct
16 Correct 353 ms 536 KB Output is correct
17 Correct 499 ms 544 KB Output is correct
18 Correct 283 ms 532 KB Output is correct
19 Correct 412 ms 760 KB Output is correct
20 Correct 329 ms 548 KB Output is correct
21 Correct 47 ms 620 KB Output is correct
22 Correct 63 ms 620 KB Output is correct
23 Correct 89 ms 700 KB Output is correct
24 Correct 3 ms 620 KB Output is correct
25 Correct 4 ms 620 KB Output is correct
26 Correct 3 ms 620 KB Output is correct
27 Correct 3 ms 572 KB Output is correct
28 Correct 0 ms 496 KB Output is correct
29 Correct 497 ms 536 KB Output is correct
30 Correct 469 ms 544 KB Output is correct
31 Correct 420 ms 532 KB Output is correct
32 Correct 330 ms 532 KB Output is correct
33 Correct 386 ms 544 KB Output is correct
34 Correct 219 ms 680 KB Output is correct
35 Correct 396 ms 772 KB Output is correct
36 Correct 431 ms 664 KB Output is correct
37 Correct 407 ms 656 KB Output is correct
38 Correct 375 ms 532 KB Output is correct
39 Correct 390 ms 768 KB Output is correct
40 Correct 327 ms 660 KB Output is correct
41 Correct 415 ms 796 KB Output is correct
42 Correct 47 ms 600 KB Output is correct
43 Correct 70 ms 720 KB Output is correct
44 Correct 71 ms 632 KB Output is correct
45 Correct 110 ms 536 KB Output is correct
46 Correct 289 ms 532 KB Output is correct
47 Correct 230 ms 544 KB Output is correct
48 Correct 38 ms 756 KB Output is correct
49 Correct 46 ms 872 KB Output is correct