#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
LL two(vector<vector<LL> > z, LL n){
LL maxcross = 0;
LL numcross[n][n];
vector<LL> ends(n, 0);
vector<LL> backs[n];
for(int j = 0; j < z.size(); j++){
int c = z[j][0];
int d = z[j][1];
ends[c]++;
ends[d]++;
backs[d].push_back(c);
}
for(int a = 0; a < n; a++){
numcross[a][a] = 0;
LL f = 0;
for(int b = a+1; b < n; b++){
f += ends[b];
for(int r : backs[b]){
if(r >= a+1){
f -= 2;
}
}
numcross[a][b] = f;
maxcross = max(maxcross, numcross[a][b]);
}
}
vector<pair<LL,LL> > pairs[2];
for(int a = 0; a < n; a++){
LL f = 0;
for(int b = a+1; b < n; b++){
if(numcross[a][b] == maxcross){
pairs[numcross[0][a] % 2].push_back({a,b});
}
}
}
LL realbound = (maxcross + 1) / 2;
if(maxcross % 2 == 1) return realbound;
for(int r = 0; r < 2; r++){
for(auto p1 : pairs[r]){
for(auto p2 : pairs[1-r ]){
int a = p1.first;
int c = p1.second;
int b = p2.first;
int d = p2.second;
if(a >= b || b >= c || c >= d) continue;
if(numcross[a][b] % 2 == 1){
return realbound + 1;
}
}
}
}
return realbound;
}
int main(){
cin.sync_with_stdio(0); cin.tie(0);
LL n, m;
cin >> n >> m;
// stations 1 to n
vector<vector<LL> > z;
for(int i = 0; i < m; i++){
LL a, b, c;
cin >> a >> b >> c;
a--; b--;
if(a > b) swap(a,b);
for(int j = 0; j < c; j++){
z.push_back(vector<LL>({a,b}));
}
}
LL bound = two(z, n);
cout << bound << '\n';
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
492 KB |
Output is correct |
| 3 |
Correct |
2 ms |
492 KB |
Output is correct |
| 4 |
Correct |
2 ms |
492 KB |
Output is correct |
| 5 |
Correct |
3 ms |
492 KB |
Output is correct |
| 6 |
Correct |
3 ms |
492 KB |
Output is correct |
| 7 |
Correct |
2 ms |
492 KB |
Output is correct |
| 8 |
Correct |
2 ms |
536 KB |
Output is correct |
| 9 |
Correct |
2 ms |
652 KB |
Output is correct |
| 10 |
Correct |
3 ms |
652 KB |
Output is correct |
| 11 |
Correct |
2 ms |
652 KB |
Output is correct |
| 12 |
Correct |
2 ms |
652 KB |
Output is correct |
| 13 |
Correct |
2 ms |
652 KB |
Output is correct |
| 14 |
Correct |
2 ms |
652 KB |
Output is correct |
| 15 |
Correct |
3 ms |
652 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
492 KB |
Output is correct |
| 3 |
Correct |
2 ms |
492 KB |
Output is correct |
| 4 |
Correct |
2 ms |
492 KB |
Output is correct |
| 5 |
Correct |
3 ms |
492 KB |
Output is correct |
| 6 |
Correct |
3 ms |
492 KB |
Output is correct |
| 7 |
Correct |
2 ms |
492 KB |
Output is correct |
| 8 |
Correct |
2 ms |
536 KB |
Output is correct |
| 9 |
Correct |
2 ms |
652 KB |
Output is correct |
| 10 |
Correct |
3 ms |
652 KB |
Output is correct |
| 11 |
Correct |
2 ms |
652 KB |
Output is correct |
| 12 |
Correct |
2 ms |
652 KB |
Output is correct |
| 13 |
Correct |
2 ms |
652 KB |
Output is correct |
| 14 |
Correct |
2 ms |
652 KB |
Output is correct |
| 15 |
Correct |
3 ms |
652 KB |
Output is correct |
| 16 |
Correct |
2 ms |
1364 KB |
Output is correct |
| 17 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 18 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 19 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 20 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 21 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 22 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 23 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 24 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 25 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 26 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 27 |
Correct |
4 ms |
1388 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
492 KB |
Output is correct |
| 3 |
Correct |
2 ms |
492 KB |
Output is correct |
| 4 |
Correct |
2 ms |
492 KB |
Output is correct |
| 5 |
Correct |
3 ms |
492 KB |
Output is correct |
| 6 |
Correct |
3 ms |
492 KB |
Output is correct |
| 7 |
Correct |
2 ms |
492 KB |
Output is correct |
| 8 |
Correct |
2 ms |
536 KB |
Output is correct |
| 9 |
Correct |
2 ms |
652 KB |
Output is correct |
| 10 |
Correct |
3 ms |
652 KB |
Output is correct |
| 11 |
Correct |
2 ms |
652 KB |
Output is correct |
| 12 |
Correct |
2 ms |
652 KB |
Output is correct |
| 13 |
Correct |
2 ms |
652 KB |
Output is correct |
| 14 |
Correct |
2 ms |
652 KB |
Output is correct |
| 15 |
Correct |
3 ms |
652 KB |
Output is correct |
| 16 |
Correct |
2 ms |
1364 KB |
Output is correct |
| 17 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 18 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 19 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 20 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 21 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 22 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 23 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 24 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 25 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 26 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 27 |
Correct |
4 ms |
1388 KB |
Output is correct |
| 28 |
Correct |
55 ms |
47228 KB |
Output is correct |
| 29 |
Correct |
51 ms |
47392 KB |
Output is correct |
| 30 |
Correct |
53 ms |
47392 KB |
Output is correct |
| 31 |
Correct |
56 ms |
47484 KB |
Output is correct |
| 32 |
Correct |
49 ms |
47484 KB |
Output is correct |
| 33 |
Correct |
52 ms |
47484 KB |
Output is correct |
| 34 |
Correct |
55 ms |
47484 KB |
Output is correct |
| 35 |
Correct |
54 ms |
47484 KB |
Output is correct |
| 36 |
Correct |
57 ms |
47484 KB |
Output is correct |
| 37 |
Correct |
77 ms |
63956 KB |
Output is correct |
| 38 |
Correct |
232 ms |
178988 KB |
Output is correct |
| 39 |
Correct |
152 ms |
178988 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
492 KB |
Output is correct |
| 3 |
Correct |
2 ms |
492 KB |
Output is correct |
| 4 |
Correct |
2 ms |
492 KB |
Output is correct |
| 5 |
Correct |
3 ms |
492 KB |
Output is correct |
| 6 |
Correct |
3 ms |
492 KB |
Output is correct |
| 7 |
Correct |
2 ms |
492 KB |
Output is correct |
| 8 |
Correct |
2 ms |
536 KB |
Output is correct |
| 9 |
Correct |
2 ms |
652 KB |
Output is correct |
| 10 |
Correct |
3 ms |
652 KB |
Output is correct |
| 11 |
Correct |
2 ms |
652 KB |
Output is correct |
| 12 |
Correct |
2 ms |
652 KB |
Output is correct |
| 13 |
Correct |
2 ms |
652 KB |
Output is correct |
| 14 |
Correct |
2 ms |
652 KB |
Output is correct |
| 15 |
Correct |
3 ms |
652 KB |
Output is correct |
| 16 |
Correct |
2 ms |
1364 KB |
Output is correct |
| 17 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 18 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 19 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 20 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 21 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 22 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 23 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 24 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 25 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 26 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 27 |
Correct |
4 ms |
1388 KB |
Output is correct |
| 28 |
Correct |
55 ms |
47228 KB |
Output is correct |
| 29 |
Correct |
51 ms |
47392 KB |
Output is correct |
| 30 |
Correct |
53 ms |
47392 KB |
Output is correct |
| 31 |
Correct |
56 ms |
47484 KB |
Output is correct |
| 32 |
Correct |
49 ms |
47484 KB |
Output is correct |
| 33 |
Correct |
52 ms |
47484 KB |
Output is correct |
| 34 |
Correct |
55 ms |
47484 KB |
Output is correct |
| 35 |
Correct |
54 ms |
47484 KB |
Output is correct |
| 36 |
Correct |
57 ms |
47484 KB |
Output is correct |
| 37 |
Correct |
77 ms |
63956 KB |
Output is correct |
| 38 |
Correct |
232 ms |
178988 KB |
Output is correct |
| 39 |
Correct |
152 ms |
178988 KB |
Output is correct |
| 40 |
Runtime error |
66 ms |
178988 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 41 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
492 KB |
Output is correct |
| 3 |
Correct |
2 ms |
492 KB |
Output is correct |
| 4 |
Correct |
2 ms |
492 KB |
Output is correct |
| 5 |
Correct |
3 ms |
492 KB |
Output is correct |
| 6 |
Correct |
3 ms |
492 KB |
Output is correct |
| 7 |
Correct |
2 ms |
492 KB |
Output is correct |
| 8 |
Correct |
2 ms |
536 KB |
Output is correct |
| 9 |
Correct |
2 ms |
652 KB |
Output is correct |
| 10 |
Correct |
3 ms |
652 KB |
Output is correct |
| 11 |
Correct |
2 ms |
652 KB |
Output is correct |
| 12 |
Correct |
2 ms |
652 KB |
Output is correct |
| 13 |
Correct |
2 ms |
652 KB |
Output is correct |
| 14 |
Correct |
2 ms |
652 KB |
Output is correct |
| 15 |
Correct |
3 ms |
652 KB |
Output is correct |
| 16 |
Correct |
2 ms |
1364 KB |
Output is correct |
| 17 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 18 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 19 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 20 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 21 |
Correct |
3 ms |
1364 KB |
Output is correct |
| 22 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 23 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 24 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 25 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 26 |
Correct |
3 ms |
1388 KB |
Output is correct |
| 27 |
Correct |
4 ms |
1388 KB |
Output is correct |
| 28 |
Correct |
55 ms |
47228 KB |
Output is correct |
| 29 |
Correct |
51 ms |
47392 KB |
Output is correct |
| 30 |
Correct |
53 ms |
47392 KB |
Output is correct |
| 31 |
Correct |
56 ms |
47484 KB |
Output is correct |
| 32 |
Correct |
49 ms |
47484 KB |
Output is correct |
| 33 |
Correct |
52 ms |
47484 KB |
Output is correct |
| 34 |
Correct |
55 ms |
47484 KB |
Output is correct |
| 35 |
Correct |
54 ms |
47484 KB |
Output is correct |
| 36 |
Correct |
57 ms |
47484 KB |
Output is correct |
| 37 |
Correct |
77 ms |
63956 KB |
Output is correct |
| 38 |
Correct |
232 ms |
178988 KB |
Output is correct |
| 39 |
Correct |
152 ms |
178988 KB |
Output is correct |
| 40 |
Runtime error |
66 ms |
178988 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
| 41 |
Halted |
0 ms |
0 KB |
- |
