mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
119 lines
3.5 KiB
C++
119 lines
3.5 KiB
C++
#include <iostream>
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#include <cstring>
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#include <cstdio>
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using namespace std;
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#define FOR(i,a,b) for(i = (a); i < (b); ++i)
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#define FORE(i,a,b) for(i = (a); i <= (b); ++i)
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#define CLR(a,b) memset(a,b,sizeof(a))
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const int inf = 1 << 30;
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const int MAXN = 502000;
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const int MAXM = 3100000;
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struct node {
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int c,u,v,next;
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}edge[MAXM];
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int N, M;
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int ne, head[MAXN];
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int cur[MAXN], ps[MAXN], dep[MAXN];
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void addedge(int u, int v,int w) {
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edge[ne].u = u;
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edge[ne].v = v;
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edge[ne].c = w;
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edge[ne].next = head[u];
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head[u] = ne ++;
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edge[ne].u = v;
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edge[ne].v = u;
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edge[ne].c = w;
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edge[ne].next = head[v];
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head[v] = ne ++;
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}
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int dinic(int s, int t) {
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int tr, res = 0;
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int i, j, k, f, r, top;
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while(1) {
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memset(dep, -1, sizeof(dep));
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for(f = dep[ps[0] = s] = 0, r = 1; f != r;)
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for(i = ps[f++], j = head[i]; j != -1; j = edge[j].next)
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if(edge[j].c > 0 && dep[k = edge[j].v] == -1) {
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dep[k] = dep[i] + 1;
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ps[r++] = k;
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if(k == t) {
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f = r; break;
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}
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}
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if(dep[t] == -1) break;
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memcpy(cur, head, sizeof(cur));
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i = s, top = 0;
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while(1) {
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if(i == t) {
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for(tr = inf, k = 0; k < top; k++)
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if(edge[ps[k]].c < tr)
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tr = edge[ps[f = k]].c;
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for(k = 0; k < top; k++) {
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edge[ps[k]].c -= tr;
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edge[ps[k]^1].c += tr;
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}
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i = edge[ps[top=f]].u;
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res += tr;
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}
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for(j = cur[i]; cur[i] != -1; j = cur[i] = edge[cur[i]].next) {
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if(edge[j].c > 0 && dep[i]+1 == dep[edge[j].v]) break;
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}
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if(cur[i] != -1) {
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ps[top++] = cur[i];
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i = edge[cur[i]].v;
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}
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else {
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if(top == 0) break;
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dep[i] = -1;
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i = edge[ps[--top]].u;
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}
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}
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}
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return res;
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}
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int main() {
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int i, j, x, y;
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while(scanf("%d %d", &N, &M) == 2) {
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ne = 2;
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CLR(head, -1);
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CLR(cur, 0);
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CLR(ps, 0);
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CLR(dep, 0);
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FORE(i, 1, N + 1) {
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FORE(j, 1, M) {
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scanf("%d", &x);
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addedge(j + (i - 1) * (M + 1), j + (i - 1) * (M + 1) + 1, x);
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}
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}
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FORE(i, 1, N) {
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FORE(j, 1, M + 1) {
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scanf("%d", &x);
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addedge(j + (i - 1) * (M + 1), j + (i - 1) * (M + 1) + (M + 1), x);
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}
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}
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int tmp_cnt1 = (M + 1) * (N + 1) + 1, tmp_cnt2 = (M + 1) * (N + 1) + 1;
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int cntt = 1;
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FORE(i, 1, N) {
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int tt1 = tmp_cnt1, tt2 = tmp_cnt2;
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FORE(j, 1, M) {
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scanf("%d %d", &x, &y);
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addedge(cntt, tt1++, x);
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addedge(cntt + 1, tt2++, y);
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++cntt;
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}
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++cntt;
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FORE(j, 1, M) {
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scanf("%d %d", &x, &y);
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addedge(cntt, tmp_cnt1++, x);
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addedge(cntt + 1, tmp_cnt2++, y);
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++cntt;
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}
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++cntt;
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cntt -= (M + 1);
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}
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int endd = dinic(1, (N + 1) * (M + 1));
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printf("%d\n", endd);
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}
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return 0;
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}
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