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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#651059#4775. Pool constructionSGColinAC ✓21ms4304kbC++203.1kb2024-10-18 17:20:022024-10-18 17:20:02

Judging History

你现在查看的是最新测评结果

  • [2024-10-18 17:20:02]
  • 评测
  • 测评结果:AC
  • 用时:21ms
  • 内存:4304kb
  • [2024-10-18 17:20:02]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pii;
typedef long long ll;

inline int rd() {
    int x = 0;
    bool f = 0;
    char c = getchar();
    for (; !isdigit(c); c = getchar()) f |= (c == '-');
    for (; isdigit(c); c = getchar()) x = x * 10 + (c ^ 48);
    return f ? -x : x;
}

#define eb emplace_back
#define all(s) (s).begin(), (s).end()
#define rep(i, a, b) for (int i = (a); i <= (b); ++i)
#define per(i, a, b) for (int i = (a); i >= (b); --i)

inline bool getmin(int &a, int b) {return (a > b ? (a = b, true) : false);}
inline bool getmax(int &a, int b) {return (a < b ? (a = b, true) : false);}

// F is the type of flow
template<const int V, const int E, class F, const F flowInf>
struct MF {

    int tot = 1, S, T, hd[V], cur[V], dis[V];
    struct edge{int to, nxt; F cap;} e[E << 1];

    void clear() {tot = 1; memset(hd, 0, sizeof(hd));}
    void add(int u, int v, F w) {
        e[++tot].nxt = hd[u], hd[u] = tot, e[tot].to = v, e[tot].cap = w;
        e[++tot].nxt = hd[v], hd[v] = tot, e[tot].to = u, e[tot].cap = 0;
    }
    inline bool bfs() {
        static int q[V], qhd, qtl;
        memcpy(cur, hd, sizeof(hd));
        memset(dis, -1, sizeof(dis));
        q[qhd = qtl = 1] = S; dis[S] = 0;
        while (qhd <= qtl) {
            int u = q[qhd++];
            for (int i = hd[u], v; i; i = e[i].nxt)
                if (dis[v = e[i].to] == -1 && e[i].cap != 0) {
                    dis[v] = dis[u] + 1; q[++qtl] = v;
                }
        }
        return dis[T] != -1;
    }
    F dfs(int u, F rem) {
        if (u == T) return rem;
        F flow = 0;
        for (int i = cur[u], v; i && rem; i = e[i].nxt) {
            cur[u] = i; v = e[i].to;
            F nw = min(rem, e[i].cap);
            if (nw != 0 && dis[v] == dis[u] + 1) {
                int ret = dfs(v, nw);
                flow += ret; rem -= ret;
                e[i].cap -= ret; e[i ^ 1].cap += ret;
            }
        }
        if (flow == 0) dis[u] = -1;
        return flow;
    }
    F dinic(int source, int sink) {
        S = source; T = sink; F flow = 0;
        while (bfs()) flow += dfs(S, flowInf);
        return flow;
    }
};

const ll inf = 1000000000000000000ll;

MF<2510, 1000000, ll, inf> G;

const int N = 51;

bool ty[N][N];

int id[N][N];

inline void work() {
    G.clear(); G.S = 2501; G.T = 2502;
    int h = rd(), w = rd(), d = rd(), f = rd(), b = rd();
    rep(i, 1, w) rep(j, 1, h) {
        id[i][j] = (i - 1) * h + j;
        char c = getchar();
        while (c != '.' && c != '#') c = getchar();
        ty[i][j] = (c == '#');
        G.add(G.S, id[i][j], (ty[i][j] ? 0 : f));
        if (i != 1 && i != w && j != 1 && j != h) G.add(id[i][j], G.T, (ty[i][j] ? d : 0));
        else G.add(id[i][j], G.T, inf);
        if (i > 1) {G.add(id[i][j], id[i - 1][j], b); G.add(id[i - 1][j], id[i][j], b);}
        if (j > 1) {G.add(id[i][j], id[i][j - 1], b); G.add(id[i][j - 1], id[i][j], b);}
    }
    printf("%lld\n", G.dinic(G.S, G.T));
}

int main() {
    per(t, rd(), 1) work();
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 3916kb

input:

3
3 3
5 5 1
#.#
#.#
###
5 4
1 8 1
#..##
##.##
#.#.#
#####
2 2
27 11 11
#.
.#

output:

9
27
22

result:

ok 3 lines

Test #2:

score: 0
Accepted
time: 21ms
memory: 4304kb

input:

56
3 3
5 5 1
#.#
#.#
###
5 4
1 8 1
#..##
##.##
#.#.#
#####
2 2
1 1 1
##
##
2 2
1 10000 1
..
..
5 4
20 41 9
#####
##.##
#.#.#
#####
5 4
20 41 10
#####
##.##
#.#.#
#####
5 4
20 41 11
#####
##.##
#.#.#
#####
5 4
20 39 10
#####
##.##
#.#.#
#####
3 3
9760 9015 711
.#.
#.#
###
5 5
7415 7931 2080
.....
#.....

output:

9
27
0
40000
108
120
123
117
20874
100110
112364
203900
271440
462119
490330
1746528
1067774
1055196
2609818
2094932
5199902
13978
73960
99018
262976
224632
78984
167795
392774
649054
1232290
135876
318982
413042
1479538
1680354
349557
540100
2101110
335884
2245998
170698
780013
1804351
2998519
3661...

result:

ok 56 lines