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Submission #492077

# Submission time Handle Problem Language Result Execution time Memory
492077 2021-12-05T11:21:17 Z ValiAntonie Fancy Fence (CEOI20_fancyfence) C++14
73 / 100
 1000 ms 3832 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;
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});
}
//brut
for(i=1;i<=n;i++){
    total1 = (total1 + rectCount(suma[dr[sor[i].second]-1] - suma[st[sor[i].second]],sor[i].first)) % mod;
    for(j=i-1;j>=1;j--){
        if(st[sor[j].second] <= sor[i].second && dr[sor[j].second] >= sor[i].second){
            Max = sor[j].first;
            break;
        }
    }
    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 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 139 ms 1868 KB Output is correct
4 Correct 156 ms 3700 KB Output is correct
5 Correct 527 ms 3380 KB Output is correct
6 Correct 344 ms 3120 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 3 ms 588 KB Output is correct
3 Correct 14 ms 1868 KB Output is correct
4 Correct 25 ms 3476 KB Output is correct
5 Correct 29 ms 3480 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 12 ms 1868 KB Output is correct
5 Correct 31 ms 3532 KB Output is correct
6 Correct 29 ms 3352 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 3 ms 588 KB Output is correct
9 Correct 14 ms 2072 KB Output is correct
10 Correct 25 ms 3800 KB Output is correct
11 Correct 29 ms 3756 KB Output is correct
12 Correct 0 ms 332 KB Output is correct

Subtask #6
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 2 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 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 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 0 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 2 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 2 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct

Subtask #7
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 0 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 144 ms 1856 KB Output is correct
12 Correct 159 ms 3704 KB Output is correct
13 Correct 551 ms 3368 KB Output is correct
14 Correct 321 ms 3144 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 3 ms 588 KB Output is correct
17 Correct 13 ms 1904 KB Output is correct
18 Correct 27 ms 3480 KB Output is correct
19 Correct 28 ms 3408 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 3 ms 588 KB Output is correct
22 Correct 18 ms 2024 KB Output is correct
23 Correct 29 ms 3832 KB Output is correct
24 Correct 25 ms 3780 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 65 ms 588 KB Output is correct
31 Correct 67 ms 588 KB Output is correct
32 Correct 615 ms 1692 KB Output is correct
33 Execution timed out 1084 ms 1612 KB Time limit exceeded
34 Halted 0 ms 0 KB -