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Submission #544373

# Submission time Handle Problem Language Result Execution time Memory
544373 2022-04-01T19:24:04 Z ValiAntonie Fancy Fence (CEOI20_fancyfence) C++17
100 / 100
 41 ms 4232 KB 
#include <bits/stdc++.h>
#define mod 1000000007

using namespace std;

stack <pair<int,int>> S;
int n,v[100005],i,dr[100005],st[100005],x,Max,st2[100005];
long long suma[100001],total1,val1, val2,total2;
pair <int,int > sor[100005];


long long bin(long long  x){
    if(x > mod){
	x %= mod;
    }
    return ((x*(x+1))/2)%mod;
}
long long rectCount(long long x, long long y){
    return (bin(x)*bin(y))%mod;
}


int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin>>n;
for(i=1;i<=n;i++){
    cin>>v[i];
    sor[i].first = v[i];
    sor[i].second = i;
    dr[i] = n + 1;
}
sort(sor+1,sor+n+1);
for(i=1;i<=n;i++){
    cin>>x;
    suma[i] = suma[i-1] + x;
}
for(i=1;i<=n;i++){
    x = v[i];
    while(S.empty() == false && x<S.top().first){
        dr[S.top().second] = i;
        S.pop();
    }
    S.push({x,i});
}
while(S.empty() == false){
    S.pop();
}
for(i=n;i>=1;i--){
    x = v[i];
    while(S.empty() == false && x <S.top().first){
        st[S.top().second] = i;
        S.pop();
    }
    S.push({x,i});
}

while(S.empty() == false){
    S.pop();
}
for(i=n;i>=1;i--){
    x = v[i];
    while(S.empty() == false && x<=S.top().first){
        st2[S.top().second] = i;
        S.pop();
    }
    S.push({x,i});
}
for(i=1;i<=n;i++){
    total1 = (total1 + rectCount(suma[dr[sor[i].second]-1] - suma[st[sor[i].second]],sor[i].first));
    if(total1 > mod){
        total1 -= mod;
    }
    Max = max(v[st2[sor[i].second]],v[dr[sor[i].second]]);
    total2 = (total2 + rectCount(suma[dr[sor[i].second]-1] - suma[st[sor[i].second]],Max)) % mod;
}
if(total1 < total2)
    total1 += mod;
cout << total1 - total2;
    return 0;
}

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 14 ms 2004 KB Output is correct
4 Correct 29 ms 3968 KB Output is correct
5 Correct 28 ms 3796 KB Output is correct
6 Correct 28 ms 3472 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 3 ms 596 KB Output is correct
3 Correct 17 ms 2068 KB Output is correct
4 Correct 27 ms 3540 KB Output is correct
5 Correct 30 ms 3556 KB Output is correct
6 Correct 0 ms 340 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 3 ms 596 KB Output is correct
4 Correct 13 ms 2080 KB Output is correct
5 Correct 26 ms 3628 KB Output is correct
6 Correct 31 ms 3532 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 3 ms 724 KB Output is correct
9 Correct 15 ms 2148 KB Output is correct
10 Correct 28 ms 4232 KB Output is correct
11 Correct 29 ms 4228 KB Output is correct
12 Correct 0 ms 340 KB Output is correct

Subtask #6
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct

Subtask #7
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 14 ms 2004 KB Output is correct
12 Correct 29 ms 4016 KB Output is correct
13 Correct 30 ms 3716 KB Output is correct
14 Correct 27 ms 3412 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 3 ms 596 KB Output is correct
17 Correct 14 ms 2080 KB Output is correct
18 Correct 28 ms 3572 KB Output is correct
19 Correct 29 ms 3552 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 3 ms 724 KB Output is correct
22 Correct 14 ms 2164 KB Output is correct
23 Correct 28 ms 4180 KB Output is correct
24 Correct 28 ms 4208 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 4 ms 596 KB Output is correct
31 Correct 4 ms 636 KB Output is correct
32 Correct 19 ms 1840 KB Output is correct
33 Correct 18 ms 1896 KB Output is correct
34 Correct 37 ms 3384 KB Output is correct
35 Correct 40 ms 3556 KB Output is correct
36 Correct 39 ms 3372 KB Output is correct
37 Correct 41 ms 3460 KB Output is correct
38 Correct 0 ms 340 KB Output is correct
39 Correct 36 ms 3420 KB Output is correct
40 Correct 32 ms 3516 KB Output is correct
41 Correct 31 ms 3436 KB Output is correct
42 Correct 27 ms 3436 KB Output is correct