#include <bits/stdc++.h>
using namespace std;
#define ll long long int
#define sz(x) (int)x.size()
#define ff first
#define ss second
const ll N = 505;
const ll M = 1e9 + 7;
ll T, n, a[N], b[N], dp[N][5];
int main(){
ios::sync_with_stdio(false); cin.tie(0);
cin >> n;
for(int i = 1; i <= n; i++){
cin >> a[i] >> b[i];
}
ll ans = 0;
for(int i = 1; i <= n; i++){
ll mx = 0, mx1 = 0, mx2 = 0;
for(int j = 1; j < i; j++){
mx = max(mx,dp[j][0]);
mx1 = max(mx1,dp[j][1]);
if(a[j] < a[i]) mx2 = max(mx2,dp[j][1]);
}
dp[i][0] = (mx1+mx);
dp[i][1] = mx2+1;
dp[i][0] %= M;
dp[i][1] %= M;
}
cout << dp[n][0] + dp[n][1];
return 0;
}
Compilation message
boat.cpp: In function 'int main()':
boat.cpp:21:5: warning: unused variable 'ans' [-Wunused-variable]
21 | ll ans = 0;
| ^~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |