| # |
제출 시각 |
아이디 |
문제 |
언어 |
결과 |
실행 시간 |
메모리 |
| 1027575 |
2024-07-19T07:42:39 Z |
Issa |
Fire (BOI24_fire) |
C++17 |
|
2000 ms |
4700 KB |
#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 = 3e5 + 100;
const ll INF = (ll)1e18 + 100;
const int inf = 1e9 + 100;
const int MOD = 1e9 + 7;
const int maxl = 350;
const int P = 31;
int n, m;
pii a[maxn];
pii b[maxn];
int f(int i, int j){
if(j >= i) return j - i;
return m + j - i;
}
void test(){
cin >> n >> m;
for(int i = 1; i <= n; i++){
cin >> a[i].first >> a[i].second;
}
int ans = inf;
for(int i = 1; i <= n; i++){
for(int j = 1; j <= n; j++){
b[j] = a[j];
if(a[j].first < a[i].first){
b[j].first += m;
b[j].second += m;
} else if(a[j].second < a[j].first){
b[j].second += m;
}
}
int x = 0, y = 0, cnt = 0;
sort(b + 1, b + n + 1, [](pii i, pii j){
if(i.first != j.first) return i < j;
return i.second > j.second;
});
for(int j = 1; j <= n && x < m; j++){
if(f(b[i].first, b[j].first) > x){
x = y; cnt++;
}
if(f(b[i].first, b[j].first) <= x){
y = max(y, f(b[i].first, b[j].second));
} else cnt = inf;
}
if(x < m) x = y, cnt++;
if(x >= m) ans = min(ans, cnt);
}
if(ans == inf) ans = -1;
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 |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 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 |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 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 |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 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 |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 7 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 8 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
| 9 |
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 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
4 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
4 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
4 ms |
2396 KB |
Output is correct |
| 11 |
Correct |
4 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1310 ms |
2536 KB |
Output is correct |
| 13 |
Correct |
1328 ms |
2528 KB |
Output is correct |
| 14 |
Correct |
1329 ms |
2532 KB |
Output is correct |
| 15 |
Execution timed out |
2058 ms |
4700 KB |
Time limit exceeded |
| 16 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 3 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
