代码临时存放

#include <bits/stdc++.h>
using namespace std;
#define ll long long

const int N = 505;
const ll inf = 1e18;

ll n, m, mp[N][N], matched[N];
ll slack[N], pre[N], ex[N], ey[N];//ex,ey顶标
bool visx[N], visy[N];

void match(ll u){
    ll x, y = 0, yy = 0, delta;
    memset(pre, 0, sizeof(pre));
    for(ll i = 1; i <= n; i++) slack[i] = inf;
    matched[y] = u;
    while(1){
        x = matched[y]; delta = inf; visy[y] = 1;
        for(ll i = 1; i <= n; i++){
            if(visy[i]) continue;
            if(slack[i] > ex[x]+ey[i]-mp[x][i]){
                slack[i] = ex[x]+ey[i]-mp[x][i];
                pre[i] = y;
            }
            if(slack[i] < delta){delta = slack[i]; yy = i;}
        }
        for(ll i = 0; i <= n; i++){
            if(visy[i]) ex[matched[i]] -= delta, ey[i] += delta;
            else slack[i] -= delta;
        }
        y = yy;
        if(matched[y] == -1) break;
    }
    while(y){ matched[y] = matched[pre[y]]; y = pre[y];}
}

ll KM(){
    memset(matched, -1, sizeof(matched));
    memset(ex, 0, sizeof(ex));
    memset(ey, 0, sizeof(ey));
    for(ll i = 1; i <= n; i++){
        memset(visy, 0, sizeof(visy));
        match(i);
    }
    ll res = 0;
    for(ll i = 1; i <= n; i++)
        if(matched[i] != -1) res += mp[matched[i]][i];
    return res;
}

int main(){
    scanf("%lld%lld", &n, &m);
    for(int i = 1; i <= n; i++)
        for(int j = 1; j <= n; j++)
            mp[i][j] = -inf;
    for(ll i = 1; i <= m; i++){
        ll u, v, w;
        scanf("%lld%lld%lld", &u, &v, &w);
        mp[u][v] = w;
    }
    printf("%lld\n", KM());
    for(ll i = 1; i <= n; i++)
        printf("%lld ", matched[i]);
    printf("\n");
    return 0;
}