Submission #44777

#	Time	Username	Problem	Language	Result	Execution time	Memory
44777		choikiwon	Skyline (IZhO11_skyline)	C++17	100 / 100	44 ms	48880 KiB

skyline

#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 (stderr)

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 / 100