Submission #592297

#	Time	Username	Problem	Language	Result	Execution time	Memory
592297		Soumya1	Stations (IOI20_stations)	C++17	100 / 100	929 ms	780 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
const int mxN = 1005;
vector<int> ad[mxN];
int val[mxN];
int timer;
void dfs(int u, int p, int d = 0) {
	if (d) val[u] = timer++;
	for (int v : ad[u]) {
		if (v == p) continue;
		dfs(v, u, d ^ 1);
	}
	if (!d) val[u] = timer++;
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	timer = 0;
	for (int i = 0; i < n; i++) {
		ad[i].clear();
	}
	for (int i = 0; i < n - 1; i++) {
		ad[u[i]].push_back(v[i]);
		ad[v[i]].push_back(u[i]);
	}
	dfs(0, -1);
	vector<int> ret(n);
	for (int i = 0; i < n; i++) {
		ret[i] = val[i];
	}
	return ret;
}
int find_next_station(int s, int t, vector<int> c) {
	if (s > c.back()) {
		if (t > s) return c[0];
		for (int i = c.size() - 1; i >= 1; i--) {
			if (t >= c[i]) return c[i];
		}
		return c[0];
	} else {
		if (t < s) return c.back();
		for (int i = 0; i < c.size() - 1; i++) {
			if (t <= c[i]) return c[i];
		}
		return c.back();
	}
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:41:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |   for (int i = 0; i < c.size() - 1; i++) {
      |                   ~~^~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 8 / 8
• Subtask 3: 16 / 16
• Subtask 4: 10 / 10
• Subtask 5: 61 / 61