Submission #1443447

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<map>
using namespace std;
int dp[410][2000];
int n;
int ans=1e9;
int l[410],r[410];
int mabs(int x)
{
	if(x<0)return -x;return x;
}
int main()
{
	int bs=1000;
	scanf("%d",&n);
	if(n>400)
	{
		return 0;
	}
	for(int i=1;i<=n;i++)
	{
		scanf("%d%d",l+i,r+i);
	}
	for(int i=1;i<=n;i++)
	{
		int ln=r[i-1]-l[i-1];
		for(int j=-400;j<=400;j++)
		{
			dp[i][j+bs]=1e9;
			int cst=mabs(l[i]-j);
			for(int k=j-ln;k<=j+r[i]-l[i];k++)
			{
				if(dp[i-1][k+bs]==1e9)continue;
				dp[i][j+bs]=min(dp[i][j+bs],dp[i-1][k+bs]+cst);
				if(i==n)ans=min(ans,dp[i][j+bs]);
			}
		}
	}
	printf("%d",ans);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:16:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
./Main.cpp:23:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",l+i,r+i);
                        ^

Judge Result