Submission #1222169

---

Source Code Expand

#include <bits/stdc++.h>
using namespace std;
int n,m;
bool visited[100005];
vector <int> G[100005];
vector <int> path, path2;
void make(int u){
   for(int i=0;i<G[u].size();i++){
      int v = G[u][i];
      if (visited[v]) continue;
      visited[v] = 1;
      path.push_back(v);
      make(v);
      break;
   }
}
void make2(int u){
   for(int i=0;i<G[u].size();i++){
      int v = G[u][i];
      if (visited[v]) continue;
      path2.push_back(v);
      visited[v] = 1;
      make2(v);
      break;
   }
}
int main(){
   scanf("%d %d",&n,&m);
   for(int i=1;i<=m;i++){
      int x,y;
      scanf("%d %d",&x,&y);
      G[x].push_back(y);
      G[y].push_back(x);
   }
   path.push_back(1);
   visited[1] = 1;
   make(1);
   make2(1);
   printf("%d\n",path.size() + path2.size());
   for(int i=path2.size()-1;i>=0;i--) printf("%d ",path2[i]);
   for(int i=0;i<path.size();i++) printf("%d ",path[i]);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:39:44: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘std::vector<int>::size_type {aka long unsigned int}’ [-Wformat=]
    printf("%d\n",path.size() + path2.size());
                                            ^
./Main.cpp:28:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d %d",&n,&m);
                        ^
./Main.cpp:31:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
       scanf("%d %d",&x,&y);
                           ^

Judge Result