oj.uz

Submission #44777

# Submission time Handle Problem Language Result Execution time Memory
44777 2018-04-06T07:27:14 Z choikiwon Skyline (IZhO11_skyline) C++17
100 / 100
 44 ms 48880 KB 
#include<bits/stdc++.h>
using namespace std;

int N;
int H[302];

int cc[302][202][202];
int dp(int n, int c1, int c2) {
    if(n == N) return 0;
    int &ret = cc[n][c1][c2];
    if(ret != -1) return ret;

    ret = 1e9;
    int add = c1 > c2? (c1 - c2) * 3 : 0;
    c1 = min(c1, c2);

    if(c2 <= H[n + 2]) {
        return ret = add + 7 * c1 + dp(n + 1, c2 - c1, H[n + 2] - c1);
    }
    else {
        if(c1 >= c2 - H[n + 2]) {
            ret = min(ret, add + 5 * (c2 - H[n + 2]) + 7 * (c1 - c2 + H[n + 2]) + dp(n + 1, c2 - c1, c2 - c1));
        }
        ret = min(ret, add + 5 * c1 + dp(n + 1, c2 - c1, H[n + 2]));
        return ret;
    }
}

int main() {
    scanf("%d", &N);

    for(int i = 0; i < N; i++) {
        scanf("%d", &H[i]);
    }

    memset(cc, -1, sizeof(cc));
    printf("%d", dp(0, H[0], H[1]));
}

Compilation message

skyline.cpp: In function 'int main()':
skyline.cpp:30:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
     ~~~~~^~~~~~~~~~
skyline.cpp:33:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &H[i]);
         ~~~~~^~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 48468 KB Output is correct
2 Correct 35 ms 48616 KB Output is correct
3 Correct 35 ms 48616 KB Output is correct
4 Correct 35 ms 48704 KB Output is correct
5 Correct 36 ms 48876 KB Output is correct
6 Correct 35 ms 48876 KB Output is correct
7 Correct 35 ms 48876 KB Output is correct
8 Correct 35 ms 48876 KB Output is correct
9 Correct 37 ms 48876 KB Output is correct
10 Correct 35 ms 48876 KB Output is correct
11 Correct 37 ms 48876 KB Output is correct
12 Correct 36 ms 48876 KB Output is correct
13 Correct 34 ms 48876 KB Output is correct
14 Correct 36 ms 48876 KB Output is correct
15 Correct 37 ms 48876 KB Output is correct
16 Correct 39 ms 48876 KB Output is correct
17 Correct 35 ms 48876 KB Output is correct
18 Correct 44 ms 48876 KB Output is correct
19 Correct 44 ms 48880 KB Output is correct
20 Correct 36 ms 48880 KB Output is correct