#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define ent "\n"
const int maxn = 1e6 + 100;
const ll INF = (ll)1e18 + 100;
const int inf = 1e9 + 100;
const int MOD = 1e9 + 123;
const int maxl = 26;
const int P = 31;
int n, m;
int a[maxn];
int b[maxn];
void test(){
cin >> n >> m;
for(int i = 1; i <= n; i++){
cin >> a[i] >> b[i];
}
vector<int> v;
for(int i = 2; i <= n; i++){
while(v.size() > 1){
int k = v[v.size()-2], j = v.back();
if(a[k] == a[j] && a[j] == a[i]) v.pop_back();
else if(b[k] == b[j] && b[j] == b[i]) v.pop_back();
else break;
} v.push_back(i);
}
int ans = 0;
for(int i: v){
if((b[i] & 1 )|| !b[i]) break;
ans = a[i] - (a[i] & 1);
if(a[i] & 1) break;
}
cout << ans;
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
int t; t = 1;
while(t--) test();
cout << ent;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
2396 KB |
Output is correct |
2 |
Correct |
0 ms |
2396 KB |
Output is correct |
3 |
Incorrect |
0 ms |
2396 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
2396 KB |
Output is correct |
2 |
Correct |
0 ms |
2396 KB |
Output is correct |
3 |
Incorrect |
0 ms |
2396 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
6 ms |
2904 KB |
Output is correct |
3 |
Correct |
27 ms |
7896 KB |
Output is correct |
4 |
Correct |
15 ms |
7408 KB |
Output is correct |
5 |
Correct |
15 ms |
7392 KB |
Output is correct |
6 |
Correct |
0 ms |
2396 KB |
Output is correct |
7 |
Correct |
0 ms |
2396 KB |
Output is correct |
8 |
Correct |
27 ms |
7944 KB |
Output is correct |
9 |
Correct |
15 ms |
7440 KB |
Output is correct |
10 |
Correct |
29 ms |
8152 KB |
Output is correct |
11 |
Correct |
12 ms |
5280 KB |
Output is correct |
12 |
Correct |
0 ms |
2396 KB |
Output is correct |
13 |
Correct |
28 ms |
8456 KB |
Output is correct |
14 |
Correct |
1 ms |
2396 KB |
Output is correct |
15 |
Correct |
0 ms |
2396 KB |
Output is correct |
16 |
Correct |
0 ms |
2396 KB |
Output is correct |
17 |
Correct |
1 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
2396 KB |
Output is correct |
2 |
Correct |
18 ms |
7444 KB |
Output is correct |
3 |
Correct |
15 ms |
9360 KB |
Output is correct |
4 |
Incorrect |
22 ms |
9344 KB |
Output isn't correct |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
28 ms |
7900 KB |
Output is correct |
2 |
Correct |
13 ms |
7392 KB |
Output is correct |
3 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
2396 KB |
Output is correct |
2 |
Correct |
0 ms |
2396 KB |
Output is correct |
3 |
Incorrect |
0 ms |
2396 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |