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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
#566223#9315. Rainbow Bracket Sequence0And1StoryWA 1ms4120kbC++173.0kb2024-09-15 23:26:142024-09-15 23:26:16

Judging History

你现在查看的是最新测评结果

  • [2024-09-15 23:26:16]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:4120kb
  • [2024-09-15 23:26:14]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;

#define rep(i, l, r) for (int i = l; i <= r; ++i)

const long long inf = INT_MAX;

struct Edge {
    int v, nxt, f;
    long long w;
};

const int N = 1e3;
const int M = 1e6;
int n, m, s, t, s2;
int cur[N];
long long dis[N];
bool vis[N];
Edge E[M << 1];
int head[N];
int sz = 1;
int cnt;
long long sum;
int cn[N];

int l[N], c[N], v[N];

void add_edge(int u, int v, int f, int w) {
    E[++sz] = {v, head[u], f, w};
    head[u] = sz;
}

void add_flow(int u, int v, int f, int w) {
    add_edge(u, v, f, w), add_edge(v, u, 0, -w);
}

bool spfa() {
    deque<int> q;
    rep(i, 1, cnt) dis[i] = inf, cur[i] = head[i], vis[i] = false;
    q.push_front(t), dis[t] = 0, vis[t] = 1;
    while (!q.empty()) {
        int u = q.front();
        q.pop_front();
        vis[u] = 0;
        for (int i = head[u]; i; i = E[i].nxt) {
            auto& [v, nxt, f, w] = E[i];
            if (E[i ^ 1].f && dis[v] > dis[u] + E[i ^ 1].w) {
                dis[v] = dis[u] + E[i ^ 1].w;
                if (vis[v]) continue;
                if (!q.empty() && dis[v] < dis[q.front()]) q.push_front(v);
                else q.push_back(v);
                vis[v] = 1;
            }
        }
    }
    return dis[s] != inf;
}

long long cost;

long long dfs(int u, long long flow) {
    if (u == t || !flow) return flow;
    vis[u] = 1;
    long long rest = flow;
    for (int& i = cur[u]; i; i = E[i].nxt) {
        auto& [v, nxt, f, w] = E[i];
        if (vis[v] || dis[u] != dis[v] + w || !f) continue;
        long long x = dfs(v, min(rest, (long long)f));
        if (x) E[i].f -= x, E[i ^ 1].f += x, rest -= x, cost += w * x;
        if (!rest) break;
    }
    vis[u] = 0;
    return flow - rest;
}

long long MinCostFlow() {
    long long res = 0, flow;
    while (spfa()) {
        while ((flow = dfs(s, inf))) res += flow;
    }
    return res;
}

void init() {
    sum = 0;
    sz = 1;
    memset(head, 0, sizeof(int) * (cnt + 1));
    memset(cn, 0, sizeof(int) * (n * 2 + 1));
}

void work() {
    scanf("%d%d", &n, &m);
    s = n * 4 + m + 1, t = n * 4 + m + 2, s2 = n * 4 + m + 3;
    cnt = n * 4 + m + 3;
    init();
    rep(i, 1, m) scanf("%d", &l[i]);
    rep(i, 1, 2 * n) scanf("%d", &c[i]), cn[c[i]]++;
    rep(i, 1, 2 * n) scanf("%d", &v[i]), sum += v[i];
    // add_flow(s, s2, n, 0);
    // rep(i, 1, 2 * n) add_flow(s2, i, 1, 0);
    add_flow(s, 2 * n, n, 0);
    rep(i, 1, 2 * n - 1) add_flow(i + 1, i, i / 2, 0);
    // rep(i, 1, 2 * n) {
    //     rep(j, 1, i - 1) add_flow(i, j, 1, -v[j]);
    // }
    rep(i, 1, 2 * n) add_flow(i, 4 * n + c[i], 1, v[i]);
    rep(i, 1, m) add_flow(4 * n + i, t, cn[i] - l[i], 0);

    long long maxflow = MinCostFlow();
    if (maxflow < n) {
        printf("-1\n");
        return;
    }
    printf("%lld\n", sum - cost);
}

int main() {
    int T;
    scanf("%d", &T);
    while (T--) work();
    // work();
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 4120kb

input:

2
3 2
1 2
1 2 2 2 1 2
3 1 4 2 2 1
3 2
2 2
1 2 2 2 1 2
3 1 4 2 2 1

output:

9
-1

result:

ok 2 number(s): "9 -1"

Test #2:

score: -100
Wrong Answer
time: 1ms
memory: 3840kb

input:

50
8 6
0 2 2 0 3 1
3 5 1 1 5 3 5 2 3 2 2 1 2 2 4 6
998133227 879226371 59632864 356493387 62611196 827258251 296576565 204244054 812713672 780267148 614679390 447700005 102067050 544546349 116002772 761999375
1 1
1
1 1
343766215 374461155
3 1
2
1 1 1 1 1 1
796323508 303640854 701432076 853325162 610...

output:

-1
-1486920266
145933110
236003228
-1
-4902235628
-5232564309
-5112955054
-7433977693
-4137070975
-1
-1
-13188882402
-13493490276
-13328073815
-14931435224
-19505783184
-23391215081
-19491603430
-25868548808
-28014180901
-29425072840
-1
-33755153267
-32021014193
-35053834193
-36020965929
-1
-4485743...

result:

wrong answer 2nd numbers differ - expected: '343766215', found: '-1486920266'