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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#504879 | #9102. Zayin and Elements | untitledtwo# | WA | 2ms | 3860kb | C++14 | 2.3kb | 2024-08-04 16:54:41 | 2024-08-04 16:54:41 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
int a[30], b[30], c[30];
bool isb[100010];
struct Edge
{
int to, nxt, flow, val;
} e[100010];
int ecnt = 0, head[1010];
inline void addedge(int from, int to, int flow, int val, bool ib = false)
{
e[ecnt].to = to;
e[ecnt].flow = flow;
e[ecnt].val = val;
e[ecnt].nxt = head[from];
isb[ecnt] = ib;
head[from] = ecnt++;
}
inline void connect(int from, int to, int flow, int val)
{
addedge(from, to, flow, val);
addedge(to, from, 0, -val);
}
int n, m, s, t, pre[1010], lst[1010], dis[1010];
bool vis[1010];
const int INF = INT_MAX >> 1;
queue<int> q;
inline int spfa()
{
for(int i = 0; i <= t; i++)
dis[i] = INF, vis[i] = false;
q.push(s);
vis[s] = true, dis[s] = 0, pre[t] = -1;
while(!q.empty())
{
int u = q.front();
q.pop();
vis[u] = false;
for(int i = head[u]; i != -1; i = e[i].nxt)
{
int v = e[i].to;
if(e[i].flow > 0 && dis[v] > dis[u] + e[i].val)
{
dis[v] = dis[u] + e[i].val;
pre[v] = u, lst[v] = i;
if(!vis[v])
{
vis[v] = true;
q.push(v);
}
}
}
}
return pre[t];
}
inline void Flow(int &maxflow, int &mincost)
{
maxflow = mincost = 0;
while(spfa() > 0)
{
int u = t;
mincost += dis[t];
maxflow++;
while(u != s)
{
int v = pre[u], i = lst[u];
e[i].flow--, e[i ^ 1].flow++;
if(isb[i])
{
e[i].val = 999 - e[i].val;
}
u = v;
}
}
mincost = (mincost + 999) / 1000;
}
int main()
{
int T;
scanf("%d", &T);
while(T--)
{
scanf("%d %d", &n, &m);
s = 0, t = n + 3 * m + 1;
ecnt = 0;
for(int i = 0; i <= t; i++)
head[i] = -1;
for(int i = 1; i <= n; i++)
connect(s, i, 1, 0);
int ans = 0;
for(int i = 1; i <= m; i++)
{
scanf("%d %d %d", &a[i], &b[i], &c[i]);
ans += b[i] + c[i];
int k;
scanf("%d", &k);
while(k--)
{
int u;
scanf("%d", &u);
connect(u, i + n, 1, 0);
connect(u, i + n + m, 1, 0);
connect(u, i + n + m + m, 1, 0);
}
connect(i + n, t, a[i], 0);
addedge(i + n + m, t, 2 * b[i], 999, true), addedge(t, i + n + m, 0, 0, true);
addedge(i + n + m + m, t, c[i], 1000), addedge(t, i + n + m + m, c[i], 0);
}
int maxflow, mincost;
Flow(maxflow, mincost);
if(maxflow < n)
printf("-1\n");
else
printf("%d\n", ans - mincost);
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3836kb
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: 3860kb
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:
94 97 155 151 151
result:
wrong answer 5th lines differ - expected: '152', found: '151'