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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#570856 | #9315. Rainbow Bracket Sequence | zqx | TL | 0ms | 4520kb | C++23 | 2.4kb | 2024-09-17 18:27:21 | 2024-09-17 18:27:26 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define endl "\n"
#define all(tar) tar.begin(),tar.end()
#define pii pair<int,int>
#define AC return 0;
#define ll long long
const int N = 60003;
const ll inf = 0x3f3f3f3f3f3f3f3f;
struct eg {
int to, rev;
ll val, c;
};
vector<eg>mp[N];
int s, t, vis[N];
ll dis[N], mc = 0;
void add(int x, int y, int v, int c) {
mp[x].push_back({y, (int)mp[y].size(), v, c}), mp[y].push_back({x, (int)mp[x].size() - 1, 0, -c});
}
bool spfa() {
memset(dis, 63, sizeof dis), memset(vis, 0, sizeof vis);
queue<int>q;
q.push(s), dis[s] = 0, vis[s] = 1;
while (!q.empty()) {
int x = q.front();
q.pop();
vis[x] = 0;
for (auto&[to, rev, val, c] : mp[x]) {
if (dis[to] <= dis[x] + c || !val)continue;
dis[to] = dis[x] + c;
if (!vis[to])q.push(to), vis[to] = 1;
}
}
return dis[t] != inf;
}
ll dfs(int x, ll flow) {
if (x == t || !flow)return flow;
ll ans = 0, d;
vis[x] = 1;
for (int i = 0; i < mp[x].size(); i++) {
auto&[to, rev, val, c] = mp[x][i];
if (!val || vis[to] || dis[to] != dis[x] + c)continue;
d = dfs(to, min(val, flow));
if (!d)dis[to] = inf;
ans += d, val -= d, mp[to][rev].val += d, mc += d * c, flow -= d;
}
vis[x] = 0;
return ans;
}
int id[205],idx,c1[205],c2[205],val[205],idc[205],col[205];
signed main() {
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int T;
cin>>T;
while(T--){
int n,m;
cin>>n>>m;
n*=2;
for(int i=1;i<=idx;i++)mp[idx].clear();
idx=0;
for(int i=1;i<=m;i++){
cin>>c1[i],c2[i]=0;
idc[i]=++idx;
}
for(int i=1;i<=n;i++){
cin>>col[i];
c2[col[i]]++;
}
mc=0;
int ans=0;
for(int i=1;i<=n;i++){
cin>>val[i];
id[i]=++idx;
ans+=val[i];
}
s=++idx;
t=++idx;
add(s,id[2*n],n/2,0);
bool flag=0;
for(int i=1;i<=m;i++){
if(c1[i]>c2[i]){
flag=0;
break;
}
add(idc[i],t,c2[i]-c1[i],0);
}
if(flag){
cout<<"-1\n";
continue;
}
for(int i=1;i<=2*n;i++){
add(id[i],idc[col[i]],1,val[i]);
}
for(int i=2*n-1;i>=1;i--){
add(id[i+1],id[i],i/2,0);
}
int sum=0;
while(spfa()){
sum+=dfs(s,inf);
}
if(sum!=n/2){
cout<<"-1\n";
}
else cout<<ans-mc<<'\n';
}
AC
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 4520kb
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
Time Limit Exceeded
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...