Submission #246813

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
246813	2020-07-10 11:12:51	dantoh000	One-Way Streets (CEOI17_oneway)	C++14	100 / 100	382 ms	41204 KiB

oneway

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#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> ii;
int p[100005], low[100005], num[100005];
int ct = 1;
int n,m,q;
vector<int> G[100005];
vector<int> _G[200005];
int col[100005];
int brid[100005];
int d[100005];
int P[100005][20];
int U[100005], V[100005];
int ans[100005];
int cct = 1;
vector<ii> hm[100005];
vector<int> ord;
map<ii, int> countedg;
void dfs(int u){
    low[u] = num[u] = ct++;
    for (auto v : G[u]){
        if (num[v] == -1){
            p[v] = u;
            dfs(v);
            if (low[v] > num[u]){
                //printf("%d %d is a bridge\n",u,v);
                brid[v] = 1;
            }
            low[u] = min(low[u],low[v]);
        }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

oneway.cpp: In function 'int main()':
oneway.cpp:74:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&m);
     ~~~~~^~~~~~~~~~~~~~
oneway.cpp:77:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",&U[i],&V[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~
oneway.cpp:113:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&q);
     ~~~~~^~~~~~~~~
oneway.cpp:116:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d",&a,&b);
         ~~~~~^~~~~~~~~~~~~~

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