This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <stdio.h>
#include <stdlib.h>
#define N 1000000
int *ej[N], *ew[N], eo[N];
void append(int i, int j, int w) {
int o = eo[i]++;
if (o >= 2 && (o & o - 1) == 0) {
ej[i] = (int *) realloc(ej[i], o * 2 * sizeof *ej[i]);
ew[i] = (int *) realloc(ew[i], o * 2 * sizeof *ew[i]);
}
ej[i][o] = j, ew[i][o] = w;
}
int aa[N], iq[N + 1], pq[N], cnt;
int lt(int i, int j) { return aa[i] > aa[j]; }
int p2(int p) {
return (p *= 2) > cnt ? 0 : (p < cnt && lt(iq[p + 1], iq[p]) ? p + 1 : p);
}
void pq_up(int i) {
int p, q, j;
for (p = pq[i]; (q = p / 2) && lt(i, j = iq[q]); p = q)
iq[pq[j] = p] = j;
iq[pq[i] = p] = i;
}
void pq_dn(int i) {
int p, q, j;
for (p = pq[i]; (q = p2(p)) && lt(j = iq[q], i); p = q)
iq[pq[j] = p] = j;
iq[pq[i] = p] = i;
}
void pq_add_last(int i) {
iq[pq[i] = ++cnt] = i;
}
int pq_remove_first() {
int i = iq[1], j = iq[cnt--];
if (j != i)
pq[j] = 1, pq_dn(j);
pq[i] = 0;
return i;
}
int main() {
int n, m, h, i, j, o, w;
scanf("%d%d", &n, &m);
for (i = 0; i < n; i++)
scanf("%d", &aa[i]);
for (i = 0; i < n; i++) {
ej[i] = (int *) malloc(2 * sizeof *ej[i]);
ew[i] = (int *) malloc(2 * sizeof *ew[i]);
}
for (h = 0; h < m; h++) {
scanf("%d%d%d", &i, &j, &w), i--, j--;
append(i, j, w), append(j, i, w);
}
for (i = 0; i < n; i++)
pq_add_last(i);
for (h = cnt / 2; h > 0; h--)
pq_dn(iq[h]);
while (cnt) {
i = pq_remove_first();
for (o = eo[i]; o--; ) {
j = ej[i][o], w = ew[i][o];
if (aa[j] < aa[i] - w)
aa[j] = aa[i] - w, pq_up(j);
}
}
for (i = 0; i < n; i++)
printf("%d\n", aa[i]);
return 0;
}
Compilation message (stderr)
Main.c: In function 'append':
Main.c:11:23: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
11 | if (o >= 2 && (o & o - 1) == 0) {
| ~~^~~
Main.c: In function 'main':
Main.c:58:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
58 | scanf("%d%d", &n, &m);
| ^~~~~~~~~~~~~~~~~~~~~
Main.c:60:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
60 | scanf("%d", &aa[i]);
| ^~~~~~~~~~~~~~~~~~~
Main.c:66:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
66 | scanf("%d%d%d", &i, &j, &w), i--, j--;
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
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