Pagini recente » Borderou de evaluare (job #1381812) | Borderou de evaluare (job #1749449) | Borderou de evaluare (job #1286555) | Borderou de evaluare (job #3187852) | Cod sursa (job #1980535)
#include <bits/stdc++.h>
#define N 50005
#define inf 1000000000
#define pp pair<int,int>
using namespace std;
int n, m, d[N];
vector<pp > G[N];
class comp {
public:
bool operator()(pp a, pp b)
{
return d[a.first] > d[b.first];
}
};
priority_queue<pp, vector<pp >, comp> Q;
void dijkstra()
{
int i, s;
pp p;
for (i = 2; i <= n; i++) d[i] = inf;
Q.push(make_pair(1, 0));
while (!Q.empty()) {
p = Q.top();
Q.pop();
s = p.first;
if (d[s] != p.second) continue;
for (auto x:G[s])
if (d[s] + x.second < d[x.first]) {
d[x.first] = d[s] + x.second;
Q.push(make_pair(x.first, d[x.first]));
}
}
}
int main()
{
freopen ("dijkstra.in","r",stdin);
freopen ("dijkstra.out","w",stdout);
int i, x, y, c;
scanf("%i%i", &n, &m);
for (i = 1; i <= m; i++) {
scanf("%i%i%i", &x, &y, &c);
G[x].push_back(make_pair(y, c));
}
dijkstra();
for (i = 2; i <= n; i++)
if (d[i] != inf)
printf("%i ", d[i]);
else printf("0 ");
return 0;
}