oj.uz

Submission #966699

# Submission time Handle Problem Language Result Execution time Memory
966699 2024-04-20T08:34:07 Z Amr Toy Train (IOI17_train) C++17
0 / 100
 164 ms 10600 KB 
#include "train.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define sz size()
#define F first
#define S second
#define all(x) (x).begin(),(x).end()
const int N = 1e5+2;

ll tim = 1;
ll vis[N];
vector<pair<ll,ll> > out;
vector<ll> vv;
vector<ll> adj[N], adj2[N], scc[N];
vector<ll> nodes;
ll ok = 0;
vector<int> ans;
ll p[N];
void dfs(ll x)
{
    if(vis[x]) return ;
    vis[x] = 1;
    for(int i = 0; i < adj[x].sz; i++)
    {
        ll y = adj[x][i];
        dfs(y);
    }
    out.push_back({tim++,x});
}
void dfs2(ll x)
{
    if(vis[x]) return;
    vis[x] = 1;
    vv.push_back(x);
    for(int i = 0; i < adj2[x].sz; i++)
    {
        ll y = adj2[x][i];
        dfs2(y);
    }
}
void dfs3(ll x)
{
    if(vis[x]) return;
    ok|=ans[x];
    vis[x] = 1;
    for(int i =0; i < scc[x].sz; i++)
    {
        ll y = scc[x][i];
        dfs3(y);
    }
}
std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v) {
    ll n = a.sz;
    ll m = u.sz;
    ans.resize(n);
    for(int i = 0; i < m ;i++)
    {
        ll x, y; x=u[i],y=v[i];
        adj[x].push_back(y);
        adj2[y].push_back(x);
    }
    for(int i = 0; i < n; i++){
        if(!vis[i]) dfs(i);
    }
    sort(all(out)); reverse(all(out));
    for(int i = 0; i < n; i++) vis[i] = 0;
    for(int i = 0; i < n; i++)
    {
        ll x = out[i].S;
        if(vis[x]) continue;
        vv.clear();
        dfs2(x);
        for(int j = 0; j < vv.sz; j++) p[vv[j]] = x,ans[x] = max(ans[x],r[vv[j]]);
        nodes.push_back(x);
    }
    for(int i = 0; i < n ;i++) vis[i] = 0;
    for(int i = 0; i < n ;i++)
    {
       // cout << p[i] << " ";
        for(int j = 0; j < adj[i].sz; j++)
        {
            ll x = i, y = adj[i][j];
            if(p[x]!=p[y]) scc[p[x]].push_back(p[y]);
        }
    }
    for(int i = 0; i < nodes.sz ;i++)
    {
        ok = 0;
        for(int j = 0; j < n; j++) vis[j] = 0;
        dfs3(nodes[i]);
        ans[nodes[i]]|=ok;
    }
    for(int i = 0; i < n; i++) ans[i] = ans[p[i]];
    return ans;


}

Compilation message

train.cpp: In function 'void dfs(ll)':
train.cpp:24:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     for(int i = 0; i < adj[x].sz; i++)
      |                      ^
train.cpp: In function 'void dfs2(ll)':
train.cpp:36:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for(int i = 0; i < adj2[x].sz; i++)
      |                      ^
train.cpp: In function 'void dfs3(ll)':
train.cpp:47:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |     for(int i =0; i < scc[x].sz; i++)
      |                     ^
train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:74:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   74 |         for(int j = 0; j < vv.sz; j++) p[vv[j]] = x,ans[x] = max(ans[x],r[vv[j]]);
      |                          ^
train.cpp:81:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |         for(int j = 0; j < adj[i].sz; j++)
      |                          ^
train.cpp:87:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   87 |     for(int i = 0; i < nodes.sz ;i++)
      |                      ^

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 82 ms 9896 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 8540 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 164 ms 10600 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 8 ms 10076 KB 3rd lines differ - on the 696th token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 9 ms 10168 KB 3rd lines differ - on the 2nd token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 51.0

# Verdict Execution time Memory Grader output
1 Incorrect 82 ms 9896 KB 3rd lines differ - on the 1st token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -