Pagini recente » Cod sursa (job #2999128) | Cod sursa (job #2397739) | Cod sursa (job #1076863) | Cod sursa (job #2910550) | Cod sursa (job #2067672)
#include <bits/stdc++.h>
using namespace std;
ifstream fin ("pixels.in");
ofstream fout ("pixels.out");
const int Nmax = 100 * 100 + 5;
int i, j, k, n, answer, Cost, S, D, C[5];
int code(int x, int y) { return (x-1) * n + y; }
class graph
{
int c[Nmax][Nmax], t[Nmax];
vector<int> v[Nmax];
bool BFS()
{
int node;
memset(t, -1, sizeof(t));
queue<int> Q;
Q.push(S); t[S] = 0;
while(!Q.empty())
{
node = Q.front();
Q.pop();
for(auto it : v[node])
if(t[it]==-1 && c[node][it])
{
if(it==D) return 1;
t[it] = node;
Q.push(it);
}
}
return 0;
}
public:
void add_edge(int x, int y, int capacity)
{
c[x][y] = c[y][x] = capacity;
v[x].push_back(y);
v[y].push_back(x);
}
int max_flow()
{
int node, fmin, dad, flow = 0;
while(BFS())
{
for(auto d : v[D])
if(t[d] != -1)
{
fmin = c[d][D];
node = d;
while(node != S)
{
dad = t[node];
fmin = min(fmin, c[dad][node]);
node = dad;
}
flow += fmin;
c[d][D] -= fmin;
c[D][d] += fmin;
node = d;
while(node != S)
{
dad = t[node];
c[dad][node] -= fmin;
c[node][dad] += fmin;
node = dad;
}
}
}
return flow;
}
} graph;
int main()
{
fin >> n;
S = 0, D = n * n + 1;
for(i=1; i<=n; ++i)
for(j=1; j<=n; ++j)
{
fin >> Cost;
graph.add_edge(S, code(i, j), Cost);
answer += Cost;
}
for(i=1; i<=n; ++i)
for(j=1; j<=n; ++j)
{
fin >> Cost;
graph.add_edge(code(i, j), D, Cost);
answer += Cost;
}
for(i=1; i<=n; ++i)
for(j=1; j<=n; ++j)
{
for(k=0; k<4; ++k) fin >> C[k];
if(j+1 <= n) graph.add_edge(code(i, j), code(i, j+1), C[1]);
if(i+1 <= n) graph.add_edge(code(i, j), code(i+1, j), C[2]);
}
answer -= graph.max_flow();
fout << answer << '\n';
return 0;
}