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/**
* Author -> Adrian Statescu <[email protected]> <http://thinkphp.ro>
* Operating System -> Ubuntu
* Environments -> Wim
* Compile -> g++ -std=c++11 algorithm-bellmanford.cpp -o bell
*/
#include <cstdio>
#include <vector>
#include <queue>
#include <bitset>
#define FIN "bellmanford.in"
#define FOUT "bellmanford.out"
#define oo ((1LL<<31)-1)
#define MAXN 50005
using namespace std;
int nodes,
edges;
vector<pair<int,int > > Graph[ MAXN ];
int distMin[ MAXN ];
queue<int> Queue;
bitset<MAXN> inQueue;
int countInQueue[ MAXN ];
bool negative_cycle = false;
void readData() {
int x,
y,
cost;
freopen(FIN, "r", stdin);
scanf("%d %d", &nodes, &edges);
while(edges--){
scanf("%d %d %d", &x, &y, &cost);
Graph[ x ].push_back({y,cost});
}
fclose( stdin );
};
void BellmanFord() {
for(int i = 2; i <= nodes; i++) distMin[ i ] = oo;
distMin[ 1 ] = 0;
Queue.push( 1 );
inQueue[ 1 ] = true;
while( !Queue.empty() && !negative_cycle) {
int node = Queue.front();
Queue.pop();
inQueue[ node ] = false;
for(auto it : Graph[ node ]) {
if(distMin[ it.first ] > distMin[ node ] + it.second) {
distMin[ it.first ] = distMin[ node ] + it.second;
if(!inQueue[ it.first ]) {
if(countInQueue[ it.first ] > nodes) {
negative_cycle = true;
} else {
Queue.push( it.first );
inQueue[ it.first ] = true;
countInQueue[ it.first ]++;
}
}
}
}
}
};
void writeData() {
freopen(FOUT, "w", stdout);
if(negative_cycle)
printf("%s", "Ciclu negative!");
else {
for(int i = 2; i <= nodes; i++)
printf("%d ", (distMin[ i ]));
}
fclose( stdout );
};
int main() {
readData();
BellmanFord();
writeData();
return(0);
};