#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define rt insert
#define st first
#define nd second
#define ll long long
#define pii pair < int , int >
#define DB printf("debug\n");
#define umax( x , y ) x = max( x , (y) )
#define umin( x , y ) x = min( x , (y) )
#define all(x) x.begin() , x.end()
using namespace std;
int n;
ll ans=0,mod=1e9+7;
int a[505],b[505];
void solve1(){
int dp[505][505];memset(dp,0,sizeof(dp));
dp[0][0]=1;
dp[0][a[0]]=1;
for(int i=1;i<=n;i++){
for(int j=0;j<a[i];j++){//i yi alarak
dp[i][a[i]]+=dp[i-1][j];
dp[i][a[i]]%=mod;
}
for(int j=0;j<=500;j++){// i yi almiyarak
dp[i][j]+=dp[i-1][j];
dp[i][j]%=mod;
}
}
for(int i=0;i<=500;i++){
ans+=dp[n][i];
ans%=mod;
}
cout<<ans<<endl;
}
int main(){
cin.tie(0);ios_base::sync_with_stdio(0);
//freopen("boat.in","r",stdin);
//freopen(".out","w",stdout);
cin>>n;
for(int i=0;i<n;i++)cin>>a[i]>>b[i];
solve1();
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
0 ms |
3056 KB |
Execution killed with signal 7 (could be triggered by violating memory limits) |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
0 ms |
3056 KB |
Execution killed with signal 7 (could be triggered by violating memory limits) |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
0 ms |
3052 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
0 ms |
3056 KB |
Execution killed with signal 7 (could be triggered by violating memory limits) |
2 |
Halted |
0 ms |
0 KB |
- |