#include <algorithm> #include <cstdio> #include <map> #include <queue> using namespace std; const int maxn = 205; const int INF = 0x3f3f3f3f; int d[maxn][maxn]; int terminal[maxn], vis[maxn][maxn]; map<int, int> been[maxn]; int n, m, k; int line[10000]; int main() { scanf("%d%d%d", &n, &m, &k); for (int i = 1; i <= n; i++) for (int j = 1; j <= n; j++) d[i][j] = (i == j) ? 0 : INF; int u, v, len; int fare; char ch; while (m--) { int len = 0; while (scanf("%d", &u)) { line[len++] = u; ch = getchar(); if (ch == '\n') { terminal[line[0]] = terminal[line[len - 1]] = 1; for (int i = 0; i != len - 1; i += 2) { u = line[i], v = line[i + 2]; d[v][u] = d[u][v] = min(d[u][v], line[i + 1]); } break; } } } for (int k = 1; k <= n; k++) { for (int i = 1; i <= n; i++) for (int j = 1; j <= n; j++) d[i][j] = min(d[i][j], d[i][k] + d[k][j]); } for (int i = 1; i <= n; i++) { for (int j = 1; j <= n; j++) { if (i == j || d[i][j] == INF) continue; fare = 2 + d[i][j] / k; if (!been[i].count(fare) || been[i][fare] < d[i][j]) been[i][fare] = d[i][j]; } } int t, cur, first; queue<int> Q; scanf("%d", &t); while (t--) { first = 1; scanf("%d", &u); vis[u][u] = 1; Q.push(u); while (!Q.empty()) { cur = Q.front(); Q.pop(); for (int i = 1; i <= n; i++) { if (vis[u][i] || d[cur][i] == INF) continue; if (terminal[i]) { Q.push(i); vis[u][i] = 1; } else { fare = 2 + d[cur][i] / k; if (d[cur][i] == been[cur][fare]) { Q.push(i); vis[u][i] = 1; } } } } for (int i = 1; i <= n; i++) { if (vis[u][i]) { if (first) { printf("%d", i); first = 0; } else printf(" %d", i); } } printf("\n"); } return 0; }把这段代码改为C语言代码

下面是将该段代码改为C语言的代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>

#define maxn 205
#define INF INT_MAX

int d[maxn][maxn];
int terminal[maxn], vis[maxn][maxn];
int been[maxn][maxn];
int n, m, k;
int line[10000];

int main() {
    scanf("%d%d%d", &n, &m, &k);

    // 初始化距离矩阵
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= n; j++) {
            d[i][j] = (i == j) ? 0 : INF;
        }
    }

    // 读入边并建图
    int u, v, len, fare;
    char ch;
    for (int i = 0; i < m; i++) {
        len = 0;
        while (scanf("%d", &u)) {
            line[len++] = u;
            ch = getchar();
            if (ch == '\n') {
                terminal[line[0]] = terminal[line[len - 1]] = 1;
                for (int i = 0; i != len - 1; i += 2) {
                    u = line[i], v = line[i + 2];
                    d[v][u] = d[u][v] = (d[u][v] > line[i + 1]) ? line[i + 1] : d[u][v];
                }
                break;
            }
        }
    }

    // Floyd算法求最短路
    for (int k = 1; k <= n; k++) {
        for (int i = 1; i <= n; i++) {
            for (int j = 1; j <= n; j++) {
                if (d[i][k] != INF && d[k][j] != INF && d[i][j] > d[i][k] + d[k][j]) {
                    d[i][j] = d[i][k] + d[k][j];
                }
            }
        }
    }

    // 记录每个站点到其他站点的最小票价
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= n; j++) {
            if (i == j || d[i][j] == INF) {
                continue;
            }
            fare = 2 + d[i][j] / k;
            if (been[i][fare] < d[i][j]) {
                been[i][fare] = d[i][j];
            }
        }
    }

    // 处理查询
    int t, cur, first;
    scanf("%d", &t);
    while (t--) {
        first = 1;
        scanf("%d", &u);
        vis[u][u] = 1;
        for (int i = 1; i <= n; i++) {
            if (terminal[i]) {
                vis[u][i] = 1;
            } else {
                fare = 2 + d[u][i] / k;
                if (d[u][i] == been[i][fare]) {
                    vis[u][i] = 1;
                }
            }
        }
        for (int i = 1; i <= n; i++) {
            if (vis[u][i]) {
                if (first) {
                    printf("%d", i);
                    first = 0;
                } else {
                    printf(" %d", i);
                }
            }
        }
        printf("\n");
    }
    return 0;
}