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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#504776 | #9102. Zayin and Elements | ikun# | WA | 2ms | 5660kb | C++20 | 3.1kb | 2024-08-04 15:53:02 | 2024-08-04 15:53:02 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define int long long
#define Acode ios::sync_with_stdio(false), cin.tie(0), cout.tie(0)
const int N = 1e5 + 10;
const int M = 2e6 + 10;
const int inf = 0x3f3f3f3f3f3f3f3f;
int n, m, s, t;
struct Mcmf
{
int s, t, vtot;
int head[N], etot;
int dis[N], flow, cost;
int pre[N];
bool vis[N];
struct edge
{
int v, nxt;
int f, c; // f代表流量,c代表单位费用
} e[M * 2];
void addedge(int u, int v, int f, int c, int f2 = 0)
{
e[etot] = {v, head[u], f, c};
head[u] = etot++;
e[etot] = {u, head[v], f2, -c};
head[v] = etot++;
}
bool spfa()
{
int mx = inf / 2;
for (int i = 1; i <= vtot; i++)
{
dis[i] = mx;
vis[i] = false;
pre[i] = -1;
}
dis[s] = 0;
vis[s] = true;
queue<int> q;
q.push(s);
while (!q.empty())
{
int u = q.front();
for (int i = head[u]; ~i; i = e[i].nxt)
{
int v = e[i].v;
if (e[i].f && dis[v] > dis[u] + e[i].c)
{
dis[v] = dis[u] + e[i].c;
pre[v] = i;
if (!vis[v])
{
vis[v] = 1;
q.push(v);
}
}
}
q.pop();
vis[u] = false;
}
return dis[t] != mx;
}
void dfs()
{
int u = t;
int f = inf;
while (~pre[u])
{
f = min(f, e[pre[u]].f);
u = e[pre[u] ^ 1].v;
}
flow += f;
cost += f * dis[t];
u = t;
while (~pre[u])
{
e[pre[u]].f -= f;
e[pre[u] ^ 1].f += f;
u = e[pre[u] ^ 1].v;
}
}
pair<int, int> mcmf()
{
flow = 0;
cost = 0;
while (spfa())
dfs();
return {flow, cost};
}
void init(int s_, int t_, int vtot_)
{
s = s_;
t = t_;
vtot = vtot_;
etot = 0;
for (int i = 1; i <= vtot; i++)
head[i] = -1;
}
};
Mcmf g;
void solve(){
std::cin>>n>>m;
s=2*n+3*m+1,t=s+1;
g.init(s,t,t);//!!!
int sum=0;
for(int i=1;i<=m;i++){
int a,b,c;
cin>>a>>b>>c;
sum+=b*2+c*2;
g.addedge(s,(i-1)*3+1,a,0);
g.addedge(s,(i-1)*3+2,2*b,0);
g.addedge(s,(i-1)*3+3,c,0);
//g.addedge(s,i,a+b+c,0);
int k;
cin>>k;
for(int j=1;j<=k;j++){
int x;
cin>>x;
g.addedge((i-1)*3+1,3*m+x,1,0);
g.addedge((i-1)*3+2,3*m+x,1,1);
g.addedge((i-1)*3+3,3*m+x,1,2);
}
}
for(int i=1;i<=n;i++){
g.addedge(i+3*m,t,1,0);
}
g.mcmf();
int res=g.flow;
if(res!=n) {
cout<<-1<<endl;
}
else
cout<<(sum-g.cost)/2<<'\n';
}
signed main(){
Acode;
int T=1; std::cin>>T;
while(T--) {
solve();
}
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 5660kb
input:
2 5 2 2 3 1 2 3 1 1 1 1 3 4 5 2 5 2 2 3 1 1 3 1 0 1 2 1 2
output:
5 -1
result:
ok 2 lines
Test #2:
score: -100
Wrong Answer
time: 2ms
memory: 5660kb
input:
5 9 10 0 0 10 2 3 8 0 0 10 2 4 6 0 8 2 2 2 4 0 0 10 3 1 3 8 0 4 6 2 2 3 0 8 2 3 2 6 7 0 9 1 2 1 7 0 2 8 3 1 4 9 0 7 3 1 5 0 0 10 3 5 6 9 3 10 0 9 1 1 2 0 5 5 1 1 0 1 9 1 1 0 7 3 1 1 0 7 3 0 0 0 10 0 0 6 4 1 3 0 9 1 0 0 7 3 0 0 9 1 1 2 90 20 0 6 4 12 1 4 5 22 32 64 66 67 73 87 88 89 0 1 9 12 3 8 21 3...
output:
95 98 155 151 152
result:
wrong answer 1st lines differ - expected: '94', found: '95'