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Cod sursa(job #357387)
#include <cstdio>
#include <vector> // se pare ca tot trebuie sa parsez :(
#include <queue>
#define DIM 1<<16
#define INFI 0x3f3f3f3f
#define DIM2 1<<5
using namespace std;
vector <int> G[DIM], Cost[DIM];
queue <int> Q;
int n;
char vec[DIM2];
int poz;
void citeste(int &x)
{
x=0;
while(vec[poz]<'0' || vec[poz]>'9')
if(++poz==DIM2) fread(vec,1,DIM2,stdin),poz=0;
while(vec[poz]>='0' && vec[poz]<='9')
{
x=x*10+vec[poz]-'0';
if(++poz==DIM2) fread(vec, 1, DIM2, stdin),poz=0;
}
}
void read() {
int x, y, c, m;
citeste (n); citeste (m);
for ( ; m-- ; ) {
citeste (x); citeste (y); citeste (c);
G[x].push_back(y);
Cost[x].push_back(c);
}
}
void solve() {
int x,i, visited[DIM];
for (i=2; i<=n; i++) visited[i]=INFI;
Q.push(1);
visited[1] = 1;
while ( Q.size () ) {
x = Q.front();
Q.pop();
for (i = 0; i < G[x].size(); ++i) {
if (Cost[x][i] + visited[x] < visited [ G[x][i] ]) {
visited[ G[x][i] ] = Cost[x][i] + visited[x];
Q.push ( G[x][i] );
}
}
}
for (i = 2; i <= n; ++i) {
x=visited[i];
if ( x == INFI ) printf("0 ");
else printf("%d ",x-1);
}
}
int main()
{
freopen ("dijkstra.in","r",stdin);
freopen ("dijkstra.out","w",stdout);
read();
solve();
return 0;
}
// See'ya next time with a harder problem solved :)