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Submission #492095

# Submission time Handle Problem Language Result Execution time Memory
492095 2021-12-05T11:56:03 Z ValiAntonie Fancy Fence (CEOI20_fancyfence) C++14
100 / 100
 50 ms 5784 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,j,val,Max,st2[100005],dr2[100005];
long long suma[100001],total1,val1, val2,total2;
pair <int,int > sor[100005];


long long bin(long long  x){
	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=1;i<=n;i++){
    x = v[i];
    while(S.empty() == false && x<S.top().first){
        dr2[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)) % mod;
    Max = max(v[st2[sor[i].second]],v[dr2[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 << endl;
    return 0;
}

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 15 ms 2252 KB Output is correct
4 Correct 29 ms 4460 KB Output is correct
5 Correct 30 ms 4068 KB Output is correct
6 Correct 33 ms 3808 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 4 ms 608 KB Output is correct
3 Correct 24 ms 2072 KB Output is correct
4 Correct 32 ms 3804 KB Output is correct
5 Correct 32 ms 3808 KB Output is correct
6 Correct 0 ms 332 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 3 ms 588 KB Output is correct
4 Correct 16 ms 2160 KB Output is correct
5 Correct 31 ms 3872 KB Output is correct
6 Correct 35 ms 3812 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 5 ms 640 KB Output is correct
9 Correct 16 ms 2212 KB Output is correct
10 Correct 36 ms 3960 KB Output is correct
11 Correct 32 ms 3984 KB Output is correct
12 Correct 1 ms 332 KB Output is correct

Subtask #6
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct

Subtask #7
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 15 ms 2252 KB Output is correct
12 Correct 28 ms 4400 KB Output is correct
13 Correct 32 ms 4128 KB Output is correct
14 Correct 37 ms 3836 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 4 ms 588 KB Output is correct
17 Correct 19 ms 2072 KB Output is correct
18 Correct 29 ms 3816 KB Output is correct
19 Correct 32 ms 3760 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 3 ms 716 KB Output is correct
22 Correct 15 ms 2324 KB Output is correct
23 Correct 27 ms 3944 KB Output is correct
24 Correct 29 ms 4008 KB Output is correct
25 Correct 0 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 5 ms 588 KB Output is correct
31 Correct 4 ms 588 KB Output is correct
32 Correct 21 ms 1996 KB Output is correct
33 Correct 24 ms 1996 KB Output is correct
34 Correct 41 ms 5536 KB Output is correct
35 Correct 43 ms 5560 KB Output is correct
36 Correct 45 ms 5748 KB Output is correct
37 Correct 50 ms 5700 KB Output is correct
38 Correct 0 ms 332 KB Output is correct
39 Correct 40 ms 5660 KB Output is correct
40 Correct 39 ms 5700 KB Output is correct
41 Correct 37 ms 5720 KB Output is correct
42 Correct 29 ms 5784 KB Output is correct