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Submission #492059

# Submission time Handle Problem Language Result Execution time Memory
492059 2021-12-05T11:09:11 Z ValiAntonie Fancy Fence (CEOI20_fancyfence) C++14
73 / 100
 1000 ms 4808 KB 
#include <bits/stdc++.h>
#define mod 1000000007

using namespace std;

stack <pair<long long,long long>> S;
int n,v[100005],i,dr[100005],st[100005],x,j,val,Max,nr,nr2;
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];
    if(v[i] == v[i-1])
        nr++;
    if(v[i] >= v[i-1])
        nr2++;
    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 += rectCount(suma[dr[sor[i].second]-1] - suma[st[sor[i].second]],sor[i].first) % mod;
    total1 = total1 % 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 += rectCount(suma[dr[sor[i].second]-1] - suma[st[sor[i].second]],Max) % mod;
    total2 = total2 % 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 1 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 1 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 147 ms 2024 KB Output is correct
4 Correct 162 ms 4360 KB Output is correct
5 Correct 675 ms 3744 KB Output is correct
6 Correct 434 ms 3208 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 716 KB Output is correct
3 Correct 14 ms 2244 KB Output is correct
4 Correct 27 ms 4280 KB Output is correct
5 Correct 31 ms 4188 KB Output is correct
6 Correct 1 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 716 KB Output is correct
4 Correct 15 ms 2324 KB Output is correct
5 Correct 27 ms 4260 KB Output is correct
6 Correct 39 ms 4192 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 3 ms 716 KB Output is correct
9 Correct 13 ms 2380 KB Output is correct
10 Correct 25 ms 4632 KB Output is correct
11 Correct 27 ms 4568 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 1 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 0 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 1 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 1 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 0 ms 332 KB Output is correct

Subtask #7
0 / 27.0

# 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 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 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 0 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 153 ms 2020 KB Output is correct
12 Correct 159 ms 4292 KB Output is correct
13 Correct 591 ms 3696 KB Output is correct
14 Correct 386 ms 3148 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 3 ms 716 KB Output is correct
17 Correct 13 ms 2252 KB Output is correct
18 Correct 28 ms 4300 KB Output is correct
19 Correct 30 ms 4300 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 3 ms 716 KB Output is correct
22 Correct 16 ms 2420 KB Output is correct
23 Correct 28 ms 4808 KB Output is correct
24 Correct 28 ms 4680 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 61 ms 588 KB Output is correct
31 Correct 59 ms 588 KB Output is correct
32 Correct 627 ms 1700 KB Output is correct
33 Execution timed out 1091 ms 1588 KB Time limit exceeded
34 Halted 0 ms 0 KB -