Submission #631826

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
631826	2022-08-18 21:00:30	NintsiChkhaidze	One-Way Streets (CEOI17_oneway)	C++14	100 / 100	278 ms	31144 KiB

oneway

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#include <bits/stdc++.h>
#define s second
#define f first
#define pb push_back
#define left (h<<1),l,((l+r)>>1)
#define right ((h<<1)|1),((l+r)>>1) + 1,r
using namespace std;
 
const int N = 100005;
int tin[N],low[N],a[N],b[N],ID[N],d[25][N];
int O[N],C[N];
bool bridge[N],vis[N];
vector <int> adj[N],vec[N];
vector <pair<int,int> > v[N];
int idx,cnt,n;
 
void dfs(int x,int par){
    vis[x] = 1;
    tin[x] = low[x] = cnt++;
    for (auto [to,id]: v[x]){
        if (to == par) continue;
        if (vis[to]){
            low[x] = min(low[x], tin[to]);
        }else{
            dfs(to,x);
            low[x] = min(low[x], low[to]);
            if (low[to] > tin[x]) bridge[id] = 1;
        }
    }
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

oneway.cpp: In function 'void dfs(int, int)':
oneway.cpp:20:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   20 |     for (auto [to,id]: v[x]){
      |               ^
oneway.cpp: In function 'void dfs1(int)':
oneway.cpp:35:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   35 |     for (auto [to,id]: v[x]){
      |               ^
oneway.cpp: In function 'int main()':
oneway.cpp:82:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |         for (int j = 1; j < v[i].size(); j++)
      |                         ~~^~~~~~~~~~~~~

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