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Submission #544376

# Submission time Handle Problem Language Result Execution time Memory
544376 2022-04-01T19:28:44 Z ValiAntonie Fancy Fence (CEOI20_fancyfence) C++17
100 / 100
 39 ms 4180 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++){
    while(S.empty() == false && v[i]<S.top().first){
        dr[S.top().second] = i;
        S.pop();
    }
    S.push({v[i],i});
}
while(S.empty() == false){
    S.pop();
}
for(i=n;i>=1;i--){
    while(S.empty() == false && v[i] <S.top().first){
        st[S.top().second] = i;
        S.pop();
    }
    S.push({v[i],i});
}

while(S.empty() == false){
    S.pop();
}
for(i=n;i>=1;i--){
    while(S.empty() == false && v[i]<=S.top().first){
        st2[S.top().second] = i;
        S.pop();
    }
    S.push({v[i],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;

printf("%lld",total1-total2);
    return 0;
}

Subtask #1
0.0 / 0.0

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

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 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 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 15 ms 2176 KB Output is correct
4 Correct 25 ms 3984 KB Output is correct
5 Correct 28 ms 3660 KB Output is correct
6 Correct 26 ms 3520 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 14 ms 2068 KB Output is correct
4 Correct 27 ms 3576 KB Output is correct
5 Correct 30 ms 3560 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 14 ms 2072 KB Output is correct
5 Correct 31 ms 3568 KB Output is correct
6 Correct 31 ms 3584 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 3 ms 724 KB Output is correct
9 Correct 14 ms 2276 KB Output is correct
10 Correct 27 ms 4180 KB Output is correct
11 Correct 27 ms 4176 KB Output is correct
12 Correct 1 ms 340 KB Output is correct

Subtask #6
18.0 / 18.0

# 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 1 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 1 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 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 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 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 27 ms 4000 KB Output is correct
13 Correct 29 ms 3660 KB Output is correct
14 Correct 29 ms 3512 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 26 ms 3576 KB Output is correct
19 Correct 29 ms 3632 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 3 ms 724 KB Output is correct
22 Correct 15 ms 2252 KB Output is correct
23 Correct 26 ms 4180 KB Output is correct
24 Correct 28 ms 4180 KB Output is correct
25 Correct 1 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 5 ms 596 KB Output is correct
31 Correct 5 ms 596 KB Output is correct
32 Correct 18 ms 1844 KB Output is correct
33 Correct 18 ms 1836 KB Output is correct
34 Correct 39 ms 3404 KB Output is correct
35 Correct 38 ms 3452 KB Output is correct
36 Correct 38 ms 3312 KB Output is correct
37 Correct 37 ms 3404 KB Output is correct
38 Correct 0 ms 340 KB Output is correct
39 Correct 36 ms 3312 KB Output is correct
40 Correct 32 ms 3444 KB Output is correct
41 Correct 29 ms 3372 KB Output is correct
42 Correct 28 ms 3448 KB Output is correct