Submission #35653

#	Time	Username	Problem	Language	Result	Execution time	Memory
35653		imaxblue	Senior Postmen (BOI14_postmen)	C++14	55 / 100	616 ms	53856 KiB

postmen

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define mp make_pair
#define pb push_back
#define x first
#define y second
#define pii pair<int, int>
#define fox(k, x) for (int k=0; k<x; ++k)
#define foxr(k, x) for (int k=x-1; k>=0; --k)
#define scan(x) do{while((x=getchar())<'0'); for(x-='0'; '0'<=(_=getchar()); x=(x<<3)+(x<<1)+_-'0');}while(0)
char _;

int n, m, a, b, t, p[500005];
bool u[500005], u2[500005];
vector<pii> v[500005];
vector<int> s, ans;
void dfs(int N){
    if (u[N]){
        t=-1;
        ans=vector<int>();
        while(t!=N){
            ans.pb(t=s.back()); s.pop_back();
            u[t]=0;
            printf("%i", t);
            if (t!=N) printf(" ");
        }
        printf("\n");
    }
    for(; p[N]<v[N].size(); ++p[N]){
        if (!u2[v[N][p[N]].y]){
            u[N]=1;
            s.pb(N);
            u2[v[N][p[N]].y]=1;
            dfs(v[N][p[N]].x);
        }
    }
}
int main(){
    scan(n); scan(m);
    fox(l, m){
        scan(a); scan(b);
        v[a].pb(mp(b, l));
        v[b].pb(mp(a, l));
    }
    dfs(1);
    return 0;
}

Compilation message (stderr)

postmen.cpp: In function 'void dfs(int)':
postmen.cpp:30:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(; p[N]<v[N].size(); ++p[N]){
           ~~~~^~~~~~~~~~~~

• Subtask 1: 38 / 38
• Subtask 2: 17 / 17
• Subtask 3: 0 / 45