oj.uz

Submission #338171

# Submission time Handle Problem Language Result Execution time Memory
338171 2020-12-22T15:35:40 Z juggernaut Skyline (IZhO11_skyline) C++14
100 / 100
 194 ms 49604 KB 
#include <bits/stdc++.h>
#define INF 1000000000
using namespace std;
const int N=303;
const int M=202;
int dp[N][M][M],arr[N],n;
int rec(int pos,int a1,int a2){
	if(pos>=n)
		return min(a1,a2)*5+(max(a1,a2)-min(a1,a2))*3;
	int &ret=dp[pos][a1][a2];
	if(~ret)
		return ret;
	ret=INF;
	int val=min(arr[pos],min(a1,a2));
	if(val==a2)
		ret=min(ret,rec(pos+1,arr[pos]-val,a1-val)+val*7);	
	if(a1 and a2)
		ret=min(ret,rec(pos,a1-1,a2-1)+5);
	if(a2)
		ret=min(ret,rec(pos,a1,a2-1)+3);
	return ret;
	//a2 a1 a[pos]
}
int main(){
	scanf("%d",&n);
	for(int i=0;i<n;i++)
		scanf("%d",arr+i);
	memset(dp,-1,sizeof dp);
	printf("%d\n",rec(2,arr[1],arr[0]));
	return 0;
}

Compilation message

skyline.cpp: In function 'int main()':
skyline.cpp:25:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   25 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
skyline.cpp:27:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   27 |   scanf("%d",arr+i);
      |   ~~~~~^~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 48748 KB Output is correct
2 Correct 29 ms 48748 KB Output is correct
3 Correct 22 ms 48748 KB Output is correct
4 Correct 34 ms 48748 KB Output is correct
5 Correct 22 ms 48748 KB Output is correct
6 Correct 22 ms 48748 KB Output is correct
7 Correct 23 ms 48748 KB Output is correct
8 Correct 23 ms 48748 KB Output is correct
9 Correct 24 ms 48748 KB Output is correct
10 Correct 26 ms 48748 KB Output is correct
11 Correct 41 ms 49260 KB Output is correct
12 Correct 28 ms 48876 KB Output is correct
13 Correct 42 ms 49260 KB Output is correct
14 Correct 55 ms 49260 KB Output is correct
15 Correct 136 ms 49520 KB Output is correct
16 Correct 127 ms 49536 KB Output is correct
17 Correct 194 ms 48760 KB Output is correct
18 Correct 184 ms 49388 KB Output is correct
19 Correct 171 ms 49604 KB Output is correct
20 Correct 192 ms 49388 KB Output is correct