#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main(){
ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
ll n;
ll m = 1000000007;
cin >> n;
ll h[n+5],w[n+5];
ll prefw[n+5];
ll w2 = 0;
for (int i=0;i<n;i++){
ll temp;
cin >> temp;
h[i] = temp;
}
for (int i=0;i<n;i++){
ll temp;
cin >> temp;
w[i] = temp;
w2 += temp;
//w2%=m;
prefw[i] = w2;
}
stack<pair<ll,ll>> s;
ll total=0;
for (int i=0;i<n;i++){
ll num=0;
ll carry=0;
while (!s.empty() && h[s.top().first]>h[i]){
s.pop();
}
if (!s.empty()){
carry += s.top().second;
carry%=m;
//cout << carry << " ";
ll height = h[i];
ll width = prefw[i]-prefw[s.top().first]-w[i];
width%=m;
height = height*(height+1)/2;
height%=m;
carry += (height*width)%m;
carry%=m;
}
else{
ll height = h[i];
ll width = prefw[i]-w[i];
width%=m;
height = height*(height+1)/2;
height%=m;
carry += (height*width)%m;
carry%=m;
}
//cout << carry << " ";
ll height = h[i];
ll width = w[i];
num += (carry*width)%m;
num%=m;
height = height*(height+1)/2;
ll w2 = width*(width+1)/2;
height%=m;
w2%=m;
num += (height*w2)%m;
num%=m;
carry += (height*width)%m;
carry%=m;
//cout << i << " " << carry << "\n";
s.push({i,carry});
total += num;
total %=m;
}
cout << total%m;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
8 ms |
1884 KB |
Output is correct |
4 |
Correct |
15 ms |
5076 KB |
Output is correct |
5 |
Correct |
18 ms |
4696 KB |
Output is correct |
6 |
Correct |
16 ms |
4064 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
2 ms |
604 KB |
Output is correct |
3 |
Correct |
10 ms |
2392 KB |
Output is correct |
4 |
Correct |
19 ms |
4444 KB |
Output is correct |
5 |
Correct |
19 ms |
4188 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
600 KB |
Output is correct |
3 |
Correct |
2 ms |
604 KB |
Output is correct |
4 |
Correct |
9 ms |
2396 KB |
Output is correct |
5 |
Correct |
18 ms |
4440 KB |
Output is correct |
6 |
Correct |
18 ms |
4444 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
3 ms |
604 KB |
Output is correct |
9 |
Correct |
10 ms |
2392 KB |
Output is correct |
10 |
Correct |
18 ms |
4444 KB |
Output is correct |
11 |
Correct |
19 ms |
4336 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
344 KB |
Output is correct |
7 |
Correct |
0 ms |
500 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
420 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
352 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
7 ms |
1880 KB |
Output is correct |
12 |
Correct |
16 ms |
5212 KB |
Output is correct |
13 |
Correct |
15 ms |
4444 KB |
Output is correct |
14 |
Correct |
15 ms |
3932 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
2 ms |
1056 KB |
Output is correct |
17 |
Correct |
9 ms |
3420 KB |
Output is correct |
18 |
Correct |
19 ms |
6224 KB |
Output is correct |
19 |
Correct |
21 ms |
6492 KB |
Output is correct |
20 |
Correct |
1 ms |
344 KB |
Output is correct |
21 |
Correct |
2 ms |
856 KB |
Output is correct |
22 |
Correct |
10 ms |
3420 KB |
Output is correct |
23 |
Correct |
19 ms |
6112 KB |
Output is correct |
24 |
Correct |
19 ms |
6236 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
1 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
2 ms |
860 KB |
Output is correct |
31 |
Correct |
2 ms |
860 KB |
Output is correct |
32 |
Correct |
10 ms |
2500 KB |
Output is correct |
33 |
Correct |
10 ms |
2396 KB |
Output is correct |
34 |
Correct |
18 ms |
4312 KB |
Output is correct |
35 |
Correct |
18 ms |
4444 KB |
Output is correct |
36 |
Correct |
19 ms |
4700 KB |
Output is correct |
37 |
Correct |
19 ms |
4700 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
19 ms |
4744 KB |
Output is correct |
40 |
Correct |
24 ms |
4692 KB |
Output is correct |
41 |
Correct |
19 ms |
4696 KB |
Output is correct |
42 |
Correct |
23 ms |
5716 KB |
Output is correct |