sysy-data/functional/sy/70_dijkstra.sy

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2024-01-09 19:48:14 +08:00
const int INF = 65535;
int e[16][16];
int book[16];
int dis[16];
int n, m;
int v1, v2, w;
void Dijkstra()
{
int i, j;
i = 1;
while (i <= n) {
dis[i] = e[1][i];
book[i] = 0;
i = i + 1;
}
book[1] = 1;
i = 1;
while (i <= n - 1) {
int min_num = INF;
int min_index = 0;
int k = 1;
while (k <= n) {
if (min_num > dis[k] && book[k] == 0) {
min_num = dis[k];
min_index = k;
}
k = k + 1;
}
book[min_index] = 1;
int j = 1;
while (j <= n) {
if (e[min_index][j] < INF) {
if (dis[j] > dis[min_index] + e[min_index][j]) {
dis[j] = dis[min_index] + e[min_index][j];
}
}
j = j + 1;
}
i = i + 1;
}
}
int main()
{
int i;
n = getint();
m = getint();
i = 1;
while (i <= n) {
int j = 1;
while (j <= n) {
if (i == j)
e[i][j] = 0;
else
e[i][j] = INF;
j = j + 1;
}
i = i + 1;
}
i = 1;
while (i <= m) {
int u = getint(), v = getint();
e[u][v] = getint();
i = i + 1;
}
Dijkstra();
i = 1;
while (i <= n) {
putint(dis[i]);
putch(32);
i = i + 1;
}
putch(10);
return 0;
}