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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#575730 | #9315. Rainbow Bracket Sequence | xucai | RE | 1ms | 3740kb | C++20 | 2.9kb | 2024-09-19 16:30:36 | 2024-09-19 16:30:41 |
Judging History
answer
#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <map>
#include <set>
#include <numeric>
#include <queue>
#include <cassert>
#include <cstring>
#include <climits>
#include <iomanip>
#include <cmath>
#include <bitset>
#include <array>
using namespace std;
#define int long long
constexpr int N = 3e3, M = 3e3, INF = LLONG_MAX;
int idx, f[M], w[M], e[M], ne[M], h[N];
void add(int a, int b, int c, int d) {
f[idx] = c, w[idx] = d, e[idx] = b, ne[idx] = h[a], h[a] = idx ++;
f[idx] = 0, w[idx] = - d, e[idx] = a, ne[idx] = h[b], h[b] = idx ++;
}
int n, m, S, T;
int d[N], inf[N], pre[N];
int spfa() {
for (int i = 1; i <= T; i += 1) d[i] = INF, inf[i] = pre[i] = 0;
inf[S] = INF; d[S] = 0;
queue<int> q; vector inq(N, 0LL);
q.push(S); inq[S] = 1;
while (q.size()) {
int u = q.front(); q.pop(); inq[u] = 0;
// cout << u << ' ' << h[u] << '\n';
for (int i = h[u]; i != - 1; i = ne[i]) {
int v = e[i];
// cout << v << '\n';
if (f[i] && d[v] > d[u] + w[i]) {
d[v] = d[u] + w[i]; inf[v] = min(f[i], inf[u]); pre[v] = i;
if (inq[v] == 0) {
q.push(v); inq[v] = 1;
}
}
}
}
return inf[T] > 0;
}
void EK(int &flow, int &cost) {
while (spfa()) {
int t = inf[T];
// cout << t << ' ' << d[T] << '\n';
flow += t, cost += t * d[T];
for (int u = T; u != S; u = e[pre[u] ^ 1]) {
f[pre[u]] -= t;
f[pre[u] ^ 1] += t;
}
}
}
void solve() {
cin >> n >> m;
S = 2 * n + m + 1;
T = 2 * n + m + 2;
for (int i = 1; i <= T; i += 1) h[i] = - 1;
vector l(m + 5, 0LL);
for (int i = 1; i <= m; i += 1) {
cin >> l[i];
}
vector c(2 * n + 10, 0LL);
map<int, int> mp;
for (int i = 1; i <= 2 * n; i += 1) {
cin >> c[i];
mp[c[i]] += 1;
}
vector v(2 * n + 10, 0LL);
int ans = 0;
for (int i = 1; i <= 2 * n; i += 1) {
cin >> v[i];
ans += v[i];
}
for (int i = 2 * n; i >= 1; i -= 1) {
if (i == 2 * n) {
add(S, 2 * n, n, 0);
} else {
add(i + 1, i, i / 2, 0);
}
add(i, 2 * n + c[i], 1, v[i]);
}
for (int i = 1; i <= m; i += 1) {
if (mp[i] < l[i]) {
cout << - 1 << '\n';
return;
}
add(2 * n + i, T, mp[i] - l[i], 0);
}
int flow = 0, cost = 0;
EK(flow, cost);
if (flow == n) {
cout << ans - cost << '\n';
} else {
cout << - 1 << '\n';
}
}
signed main()
{
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
int t = 1;
cin >> t;
while (t --) {
solve();
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3696kb
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: 0
Accepted
time: 1ms
memory: 3720kb
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 343766215 2351080746 3426965219 -1 -1 1351561190 2539318868 1013080942 4656646546 -1 -1 2231197660 2719131728 3983627641 4712174168 -1 1046749330 6115214757 3920988203 -1 3902088946 -1 2566553992 5268471900 5977120748 7505501534 -1 5054275471 1467678317 883992368 1044562986 -1 4024634503 -1 14472...
result:
ok 50 numbers
Test #3:
score: 0
Accepted
time: 1ms
memory: 3740kb
input:
25 20 4 0 0 0 1 2 2 2 2 4 4 4 1 2 2 2 1 3 4 1 3 4 4 3 1 3 2 1 4 2 2 4 1 2 2 3 3 4 1 3 1 4 1 2 1 569363376 821862673 89663213 862407789 442940149 823902948 903631686 838830270 645793571 397350060 806574247 373166844 448916252 435880456 969841293 998227951 276194969 654967687 396909705 696186514 16992...
output:
16418796680 10558213381 -1 1502390329 8534183652 13571062458 8007768610 12656453595 3378659874 8410746077 12352187024 5743130624 5952844559 2285684441 4242613506 836778846 4838639494 8586807028 8535185475 8089358175 5627473863 14399529671 -1 11483578919 4919631490
result:
ok 25 numbers
Test #4:
score: -100
Runtime Error
input:
83 6 5 1 0 1 1 0 2 4 4 5 3 2 4 5 3 3 3 3 597659626 649040970 33207011 223207847 960704874 418600362 658594226 417168695 767527655 622701955 867509363 235369723 6 2 0 0 1 1 2 2 2 2 1 1 1 2 2 1 405752009 976807343 267881918 26193206 947664189 555835767 587219021 231445627 755417826 541362608 846129246...