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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 |
---|---|---|---|---|---|---|---|---|---|
#604958 | #8760. 不等式 | xing4c# | WA | 5ms | 20788kb | C++14 | 1.7kb | 2024-10-02 14:46:02 | 2024-10-02 14:46:09 |
Judging History
answer
#include <bits/stdc++.h>
#define NOSYNC ios::sync_with_stdio(false); cin.tie(0); cout.tie(0)
#define all(x) x.begin(), x.end()
#define endl '\n'
using namespace std;
using ll = long long;
using ull = unsigned long long;
const int N = 200005;
// -------------- Templates Above -------------------------
int a[N]; int n, m;
vector<int> G[N]; vector<int> g[N];
int in[N]; int vis[N]; int d[N];
vector<int> ano[N]; int vq[N];
signed main() {
NOSYNC;
cin >> n >> m;
for(int i = 1; i <= m; i ++) {
int x, y, z;
cin >> x >> y >> z;
G[x].push_back(y);
G[x].push_back(z);
++ d[y]; ++ d[z];
ano[y].push_back(z);
ano[z].push_back(y);
g[y].push_back(x);
g[z].push_back(x);
in[x] += 2;
}
queue<int> q;
for(int i = 1; i <= n; i ++) {
if(!d[i]) {
q.push(i);
}
}
while(!q.empty()) {
int u = q.front(); q.pop();
vis[u] = 1;
for(int v : G[u]) {
-- d[v];
if(!d[v]) {
q.push(v);
}
}
}
for(int i = 1; i <= n; i ++) {
if(!vis[i]) {
cout << -1 << endl;
return 0;
}
}
for(int i = 1; i <= n; i ++) vis[i] = 0;
queue<int> q1;
for(int i = 1; i <= n; i ++) {
if(!in[i]) {
q1.push(i);
a[i] = 1;
}
}
while(!q1.empty()) {
int u = q1.front(); q1.pop();
vq[u] = 1;
for(int v : g[u]) {
-- in[v];
if(!in[v]) {
q1.push(v);
}
for(int w : ano[u]) {
if(!vq[w]) continue;
// cout << "u: " << u << " v: " << v << " w: " << w << endl;
a[v] = max(a[v], a[u] + a[w]);
}
}
}
int ans = 0;
for(int i = 1; i <= n; i ++) {
ans += a[i];
}
if(ans > 1e9 ) {
cout << -1 << endl;
}
cout << ans << endl;
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 4ms
memory: 20444kb
input:
3 1 1 2 2
output:
4
result:
ok 1 number(s): "4"
Test #2:
score: 0
Accepted
time: 0ms
memory: 20188kb
input:
3 1 1 2 3
output:
4
result:
ok 1 number(s): "4"
Test #3:
score: 0
Accepted
time: 3ms
memory: 20056kb
input:
3 1 1 2 2
output:
4
result:
ok 1 number(s): "4"
Test #4:
score: 0
Accepted
time: 0ms
memory: 20660kb
input:
3 1 1 2 2
output:
4
result:
ok 1 number(s): "4"
Test #5:
score: 0
Accepted
time: 0ms
memory: 19968kb
input:
3 1 1 2 2
output:
4
result:
ok 1 number(s): "4"
Test #6:
score: 0
Accepted
time: 3ms
memory: 19960kb
input:
5 1 1 2 2
output:
6
result:
ok 1 number(s): "6"
Test #7:
score: 0
Accepted
time: 0ms
memory: 20788kb
input:
5 1 1 2 2
output:
6
result:
ok 1 number(s): "6"
Test #8:
score: 0
Accepted
time: 3ms
memory: 19960kb
input:
5 1 1 2 2
output:
6
result:
ok 1 number(s): "6"
Test #9:
score: 0
Accepted
time: 0ms
memory: 19964kb
input:
5 1 1 2 3
output:
6
result:
ok 1 number(s): "6"
Test #10:
score: 0
Accepted
time: 0ms
memory: 20256kb
input:
5 2 1 2 3 2 3 4
output:
8
result:
ok 1 number(s): "8"
Test #11:
score: 0
Accepted
time: 0ms
memory: 20532kb
input:
10 1 1 2 3
output:
11
result:
ok 1 number(s): "11"
Test #12:
score: 0
Accepted
time: 3ms
memory: 20532kb
input:
10 1 1 2 2
output:
11
result:
ok 1 number(s): "11"
Test #13:
score: 0
Accepted
time: 0ms
memory: 20248kb
input:
10 2 1 2 3 2 3 4
output:
13
result:
ok 1 number(s): "13"
Test #14:
score: 0
Accepted
time: 2ms
memory: 20444kb
input:
10 2 1 2 2 2 3 4
output:
14
result:
ok 1 number(s): "14"
Test #15:
score: 0
Accepted
time: 0ms
memory: 20040kb
input:
10 3 1 2 3 1 8 8 2 3 3
output:
13
result:
ok 1 number(s): "13"
Test #16:
score: 0
Accepted
time: 0ms
memory: 20616kb
input:
20 1 1 2 2
output:
21
result:
ok 1 number(s): "21"
Test #17:
score: 0
Accepted
time: 5ms
memory: 20392kb
input:
20 2 1 2 3 2 3 3
output:
23
result:
ok 1 number(s): "23"
Test #18:
score: 0
Accepted
time: 0ms
memory: 20060kb
input:
20 3 7 14 6 1 2 3 4 7 20
output:
24
result:
ok 1 number(s): "24"
Test #19:
score: 0
Accepted
time: 0ms
memory: 20032kb
input:
20 4 1 2 2 6 10 6 2 3 3 3 4 5
output:
-1
result:
ok 1 number(s): "-1"
Test #20:
score: 0
Accepted
time: 3ms
memory: 20020kb
input:
20 5 1 17 3 1 2 3 2 3 4 3 4 5 8 13 16
output:
28
result:
ok 1 number(s): "28"
Test #21:
score: -100
Wrong Answer
time: 0ms
memory: 20124kb
input:
200 9 1 2 2 2 3 3 3 4 5 91 112 195 126 145 82 4 5 5 53 2 15 5 6 6 6 7 7
output:
341
result:
wrong answer 1st numbers differ - expected: '318', found: '341'