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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#566096 | #9315. Rainbow Bracket Sequence | 0And1Story | WA | 1ms | 3864kb | C++17 | 2.9kb | 2024-09-15 23:02:06 | 2024-09-15 23:02:07 |
Judging History
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 sum;
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, sum) 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 work() {
scanf("%d%d", &n, &m);
rep(i, 1, m) scanf("%d", &l[i]);
rep(i, 1, 2 * n) scanf("%d", &c[i]);
rep(i, 1, 2 * n) scanf("%d", &v[i]);
s = n * 4 + m + 1, t = n * 4 + m + 2, s2 = n * 4 + m + 3;
sum = n * 4 + m + 3;
sz = 1;
memset(head, 0, sizeof(int) * (sum + 1));
// 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 + 1, 0);
// rep(i, 1, 2 * n) {
// rep(j, 1, i - 1) add_flow(i, j, 1, -v[j]);
// }
rep(i, 1, m) {
rep(j, 1, 2 * n) {
if (c[j] != i) add_flow(j, 4 * n + i, 1, -v[j]);
}
}
rep(i, 1, m) add_flow(4 * n + i, t, n - l[i], 0);
long long maxflow = MinCostFlow();
if (maxflow < n) {
printf("-1\n");
return;
}
printf("%lld\n", -cost);
}
int main() {
int T;
scanf("%d", &T);
while (T--) work();
// work();
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3852kb
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: 3864kb
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:
6648855670 -1 -1 10327838363 14690305907 16187333869 -1 -1 -1 22139399893 22685106436 30826664122 33328140014 37362519275 42586937456 50876075302 54231478031 -1 -1 61855363213 66949329499 71829549457 78481250512 81949684406 89125284371 -1 97769370223 106335294465 111593053622 -1 -1 113386497287 1226...
result:
wrong answer 1st numbers differ - expected: '-1', found: '6648855670'