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Submission #303339

# Submission time Handle Problem Language Result Execution time Memory
303339 2020-09-20T08:20:45 Z Ruxandra985 Fancy Fence (CEOI20_fancyfence) C++14
100 / 100
 42 ms 5368 KB 
#include <bits/stdc++.h>
#define MOD 1000000007
#define DIMN 100010
using namespace std;

long long h[DIMN] , w[DIMN] , st[DIMN];
long long spw[DIMN];

long long rectangles (long long x , long long y){
    x %= MOD;
    y %= MOD;
    return ( ( (x * (x + 1) / 2)%MOD ) * ( (y * (y + 1) / 2)%MOD ) )%MOD;

}
int main()
{
    FILE *fin = stdin;
    FILE *fout = stdout;
    long long n , i , elem = 0;
    long long sol = 0 , lat;
    fscanf (fin,"%lld",&n);
    for (i = 1 ; i <= n ; i++)
        fscanf (fin,"%lld",&h[i]);
    for (i = 1 ; i <= n ; i++){
        fscanf (fin,"%lld",&w[i]);

        spw[i] = w[i] + spw[i - 1];

    }

    h[n + 1] = 0; /// turn fictiv inaltime ft mica
    w[n + 1] = 0;
    spw[n + 1] = spw[n];
    n++;

    elem = 0;
    for (i = 1 ; i <= n ; i++){

        while (elem && h[i] <= h[st[elem]]){

            /// i il scoate pe st[elem]
            lat = spw[i - 1] - spw[st[elem - 1]];

            sol = (sol + rectangles(h[st[elem]] , lat) - rectangles (max(h[st[elem - 1]] , h[i]) , lat))%MOD;

            elem--;
        }

        st[++elem] = i;


    }

    sol = ((sol + MOD)%MOD);

    fprintf (fout,"%lld",sol);
    return 0;
}

Compilation message

fancyfence.cpp: In function 'int main()':
fancyfence.cpp:21:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   21 |     fscanf (fin,"%lld",&n);
      |     ~~~~~~~^~~~~~~~~~~~~~~
fancyfence.cpp:23:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   23 |         fscanf (fin,"%lld",&h[i]);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~
fancyfence.cpp:25:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   25 |         fscanf (fin,"%lld",&w[i]);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 16 ms 2048 KB Output is correct
4 Correct 32 ms 3872 KB Output is correct
5 Correct 32 ms 3832 KB Output is correct
6 Correct 32 ms 3840 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 4 ms 512 KB Output is correct
3 Correct 19 ms 1536 KB Output is correct
4 Correct 36 ms 2724 KB Output is correct
5 Correct 36 ms 2680 KB Output is correct
6 Correct 0 ms 384 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 4 ms 800 KB Output is correct
4 Correct 19 ms 2432 KB Output is correct
5 Correct 37 ms 4600 KB Output is correct
6 Correct 37 ms 4728 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 5 ms 896 KB Output is correct
9 Correct 19 ms 2688 KB Output is correct
10 Correct 39 ms 5240 KB Output is correct
11 Correct 39 ms 5368 KB Output is correct
12 Correct 1 ms 384 KB Output is correct

Subtask #6
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 2 ms 384 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 416 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 0 ms 384 KB Output is correct

Subtask #7
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 17 ms 2048 KB Output is correct
12 Correct 32 ms 3832 KB Output is correct
13 Correct 32 ms 3832 KB Output is correct
14 Correct 32 ms 3832 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 4 ms 768 KB Output is correct
17 Correct 19 ms 2432 KB Output is correct
18 Correct 37 ms 4600 KB Output is correct
19 Correct 37 ms 4728 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 5 ms 896 KB Output is correct
22 Correct 22 ms 2680 KB Output is correct
23 Correct 39 ms 5240 KB Output is correct
24 Correct 39 ms 5368 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 5 ms 772 KB Output is correct
31 Correct 5 ms 768 KB Output is correct
32 Correct 19 ms 2432 KB Output is correct
33 Correct 21 ms 2432 KB Output is correct
34 Correct 39 ms 4344 KB Output is correct
35 Correct 36 ms 4344 KB Output is correct
36 Correct 42 ms 4600 KB Output is correct
37 Correct 41 ms 4600 KB Output is correct
38 Correct 1 ms 384 KB Output is correct
39 Correct 40 ms 4600 KB Output is correct
40 Correct 39 ms 4600 KB Output is correct
41 Correct 39 ms 4728 KB Output is correct
42 Correct 39 ms 4984 KB Output is correct