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Submission #74662

# Submission time Handle Problem Language Result Execution time Memory
74662 2018-09-05T23:55:07 Z tmwilliamlin168 Senior Postmen (BOI14_postmen) C++14
100 / 100
 448 ms 56628 KB 
#include <bits/stdc++.h>
using namespace std;

int in() {
	char c=getchar_unlocked();
	while(c<'0'||c>'9')
		c=getchar_unlocked();
	int r=0;
	while(c>='0'&&c<='9') {
		r=r*10+c-'0';
		c=getchar_unlocked();
	}
	return r;
}

void out(int x) {
	int lz=0, r=0;
	while(x%10==0) {
		++lz;
		x/=10;
	}
	while(x) {
		r=r*10+x%10;
		x/=10;
	}
	while(r) {
		putchar_unlocked('0'+r%10);
		r/=10;
	}
	while(lz--)
		putchar_unlocked('0');
}

const int mxN=5e5;
int n, m, eu[mxN], ev[mxN];
vector<int> adj[mxN], a1, a2;
bool a[mxN], b[mxN];

void dfs(int u) {
	while(adj[u].size()) {
		int e=adj[u].back();
		adj[u].pop_back();
		if(a[e])
			continue;
		a[e]=1;
		dfs(eu[e]^ev[e]^u);
	}
	a1.push_back(u);
}

int main() {
	n=in(), m=in();
	for(int i=0; i<m; ++i) {
		eu[i]=in()-1, ev[i]=in()-1;
		adj[eu[i]].push_back(i);
		adj[ev[i]].push_back(i);
	}
	dfs(0);
	for(int i=0; i<a1.size(); ++i) {
		if(b[a1[i]]) {
			while(a2.back()!=a1[i]) {
				out(a2.back()+1);
				putchar_unlocked(' ');
				b[a2.back()]=0;
				a2.pop_back();
			}
			out(a1[i]+1);
			putchar_unlocked('\n');
		} else {
			a2.push_back(a1[i]);
			b[a1[i]]=1;
		}
	}
}

Compilation message

postmen.cpp: In function 'int main()':
postmen.cpp:59:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<a1.size(); ++i) {
               ~^~~~~~~~~~

Subtask #1
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 12152 KB Output is correct
2 Correct 15 ms 12160 KB Output is correct
3 Correct 11 ms 12136 KB Output is correct
4 Correct 12 ms 12288 KB Output is correct
5 Correct 11 ms 12160 KB Output is correct
6 Correct 11 ms 12416 KB Output is correct
7 Correct 14 ms 13056 KB Output is correct
8 Correct 12 ms 12288 KB Output is correct
9 Correct 30 ms 18040 KB Output is correct
10 Correct 15 ms 12288 KB Output is correct
11 Correct 12 ms 12392 KB Output is correct
12 Correct 32 ms 18172 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 12160 KB Output is correct
2 Correct 12 ms 12032 KB Output is correct
3 Correct 12 ms 12032 KB Output is correct
4 Correct 15 ms 12288 KB Output is correct
5 Correct 11 ms 12160 KB Output is correct
6 Correct 15 ms 12416 KB Output is correct
7 Correct 14 ms 13056 KB Output is correct
8 Correct 15 ms 12288 KB Output is correct
9 Correct 35 ms 18040 KB Output is correct
10 Correct 13 ms 12264 KB Output is correct
11 Correct 11 ms 12288 KB Output is correct
12 Correct 37 ms 18168 KB Output is correct
13 Correct 58 ms 20828 KB Output is correct
14 Correct 51 ms 18420 KB Output is correct
15 Correct 61 ms 19544 KB Output is correct
16 Correct 68 ms 20896 KB Output is correct
17 Correct 64 ms 16752 KB Output is correct
18 Correct 56 ms 18932 KB Output is correct

Subtask #3
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12032 KB Output is correct
2 Correct 12 ms 12032 KB Output is correct
3 Correct 12 ms 12136 KB Output is correct
4 Correct 17 ms 12288 KB Output is correct
5 Correct 12 ms 12160 KB Output is correct
6 Correct 14 ms 12416 KB Output is correct
7 Correct 15 ms 13140 KB Output is correct
8 Correct 12 ms 12288 KB Output is correct
9 Correct 29 ms 18040 KB Output is correct
10 Correct 15 ms 12264 KB Output is correct
11 Correct 13 ms 12288 KB Output is correct
12 Correct 35 ms 18172 KB Output is correct
13 Correct 64 ms 20852 KB Output is correct
14 Correct 50 ms 18420 KB Output is correct
15 Correct 48 ms 19568 KB Output is correct
16 Correct 65 ms 20848 KB Output is correct
17 Correct 60 ms 16752 KB Output is correct
18 Correct 58 ms 18932 KB Output is correct
19 Correct 448 ms 55668 KB Output is correct
20 Correct 395 ms 44628 KB Output is correct
21 Correct 354 ms 49804 KB Output is correct
22 Correct 447 ms 56628 KB Output is correct
23 Correct 110 ms 41560 KB Output is correct
24 Correct 443 ms 35876 KB Output is correct
25 Correct 431 ms 47464 KB Output is correct