Submission #853821

#	Time	Username	Problem	Language	Result	Execution time	Memory
853821		kthng	Crocodile's Underground City (IOI11_crocodile)	C++17	46 / 100	3 ms	6748 KiB

crocodile

#include<iostream>
#include<algorithm>
#include<vector>
#include "crocodile.h"
using namespace std;

typedef pair<int, int> pii;
vector<pii> a[100001];
int d[100001];
int n, m, k;
int inf = 1e9 + 100;

int f(int x) {
	if (d[x] != -1) return d[x];
	d[x] = inf;
	vector<pii> tmp;
	for (int i = 0; i < a[x].size(); i++) {
		tmp.push_back(pii(f(a[x][i].first) + a[x][i].second, a[x][i].first));
	}
	sort(tmp.begin(), tmp.end());
	if (a[x].size() != 1) d[x] = min(d[x], tmp[1].first);
	return d[x];
}

int travel_plan(int N, int M, int R[][2], int L[], int K, int P[])
{
	n = N;
	m = M;
	for (int i = 0; i < m; i++) {
		a[R[i][0]].push_back(pii(R[i][1], L[i]));
		a[R[i][1]].push_back(pii(R[i][0], L[i]));
	}
	k = K;
	for (int i = 0; i < n; i++) d[i] = -1;
	for (int i = 0; i < K; i++) d[P[i]] = 0;
	return f(0);
}

/*
int main() {
	scanf("%d%d%d", &n, &m, &k);
	for (int i = 0; i < m; i++) {
		int t0, t1, t2;
		scanf("%d%d%d", &t0, &t1, &t2);
		a[t0].push_back(pii(t1, t2));
		a[t1].push_back(pii(t0, t2));
	}
	for (int i = 0; i < n; i++) d[i] = -1;
	for (int i = 0; i < k; i++) {
		int t0;
		scanf("%d", &t0);
		d[t0] = 0;
	}
	printf("%d\n", f(0));

	return 0;
}
*/

Compilation message (stderr)

crocodile.cpp: In function 'int f(int)':
crocodile.cpp:17:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |  for (int i = 0; i < a[x].size(); i++) {
      |                  ~~^~~~~~~~~~~~~

• Subtask 1: 46 / 46
• Subtask 2: 0 / 43
• Subtask 3: 0 / 11