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#include "../util.h"
#pragma GCC diagnostic ignored "-Wshadow"
namespace matching {
constexpr int N_LEFT = 1000;
constexpr int N_RIGHT = 1000;
constexpr double INF = LD::INF;
#include <graph/maxWeightBipartiteMatching.cpp>
}
namespace mcmf {
#include <graph/minCostMaxFlow.cpp>
}
void stress_test() {
ll queries = 0;
for (int tries = 0; tries < 20'000; tries++) {
auto [l, r] = Random::pair<int>(1, 30);
mcmf::MinCostFlow mcmf(l+r+2, 0, 1);
for (int i = 0; i < l; i++) mcmf.addEdge(0, 2 + i, 1, 0);
for (int i = 0; i < r; i++) mcmf.addEdge(2 + l + i, 1, 1, 0);
for (int i = 0; i < l; i++) {
for (int j = 0; j < r; j++) {
matching::costs[i][j] = Random::integer<int>(-100, 100);
mcmf.addEdge(2 + i, 2 + l + j, 1, -matching::costs[i][j]);
}
}
mcmf.mincostflow();
ll got = -mcmf.mincost;
double expected = matching::match(l, r);
if (got != expected) cerr << "got: " << got << ", expected: " << expected << FAIL;
queries += l + r;
}
cerr << "tested random queries: " << queries << endl;
}
constexpr int N = 1'000;
constexpr int M = 10'000;
void performance_test() {
using namespace mcmf;
timer t;
Graph<NoData> g(N);
g.erdosRenyi(M);
MinCostFlow mcmf(N, 0, 1);
vector<ll> potential = Random::integers<ll>(N, 0, 1'000'000ll);
g.forEdges([&](int a, int b){
ll c = Random::integer<ll>(1, 1000'000);
ll cost = Random::integer<ll>(0, 1000'000);
mcmf.addEdge(a, b, c, potential[b] + cost - potential[a]);
mcmf.addEdge(b, a, c, potential[a] + cost - potential[b]);
});
t.start();
mcmf.mincostflow();
t.stop();
hash_t hash = mcmf.mincost;
if (t.time > 500) cerr << "too slow: " << t.time << FAIL;
cerr << "tested performance: " << t.time << "ms (hash: " << hash << ")" << endl;
}
int main() {
stress_test();
if (!sanitize) performance_test();
}
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