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#include <bits/stdc++.h>
using namespace std;
#define INF 0x3f3f3f3f
const int maxn = 105;
const int maxm = 10005; // 假设m的最大值为10000
int mpt[maxn][maxn];
int n, m;
struct node {
int a, b, c;
} road[maxm]; // 扩大数组大小以容纳更多边
bool deleted[maxm]; // 标记边是否被删除
void floyd() {
for (int k = 1; k <= n; k++) {
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= n; j++) {
mpt[i][j] = min(mpt[i][j], mpt[i][k] + mpt[k][j]);
}
}
}
}
int main() {
int a;
cin >> a;
while (a--) {
memset(deleted, 0, sizeof(deleted)); // 重置删除标记
int z;
cin >> n >> m >> z;
...
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