Submission #92956

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
92956	2019-01-06 09:02:54	Kastanda	One-Way Streets (CEOI17_oneway)	C++11	100 / 100	241 ms	29816 KiB

oneway

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#include<bits/stdc++.h>
#define pb push_back
using namespace std;
const int N = 100005, LG = 18;
int n, m, q, from[N], to[N], M[N], H[N], Mn[N];
int cp, Hc[N], C[N], P[N][LG], up[N], dn[N];
int qa[N], qb[N];
char R[N];
vector < int > Adj[N], Ad[N];
void DFS(int v, int p)
{
    Mn[v] = H[v]; M[v] = 1;
    for (int &id : Adj[v])
    {
        if (id == p)
            continue;
        int u = from[id] ^ to[id] ^ v;
        if (M[u] == 2)
            continue;
        else if (M[u] == 1)
            Mn[v] = min(Mn[v], H[u]);
        else
        {
            H[u] = H[v] + 1;
            DFS(u, id);
            Mn[v] = min(Mn[v], Mn[u]);
        }
    }
    M[v] = 2;
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

oneway.cpp: In function 'int main()':
oneway.cpp:101:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~
oneway.cpp:104:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &from[i], &to[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
oneway.cpp:109:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &q);
     ~~~~~^~~~~~~~~~
oneway.cpp:111:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &qa[i], &qb[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 30 / 30
• Subtask 3: 40 / 40