Submission #863946

#	Time	Username	Problem	Language	Result	Execution time	Memory
863946		MilosMilutinovic	Bajka (COCI20_bajka)	C++14	70 / 70	37 ms	668 KiB

bajka

#include<bits/stdc++.h>

#define pb push_back
#define fi first
#define se second
#define mp make_pair

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef long double ld;

template <typename T> bool chkmin(T &x,T y){return x>y?x=y,1:0;}
template <typename T> bool chkmax(T &x,T y){return x<y?x=y,1:0;}

int readint(){
	int x=0,f=1; char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
	return x*f;
}

int n,m,dp[305][2];
char s[305],t[305];

int main(){
	n=readint(); m=readint();
	scanf("%s",s+1);
	scanf("%s",t+1);
	for(int i=1;i<=n;i++) dp[i][0]=(s[i]==t[1]?0:1e9),dp[i][1]=1e9;
	for(int j=2;j<=m;j++){
		for(int i=1;i<=n;i++){
			if(i>1&&s[i-1]==t[j]) dp[i-1][1]=min(dp[i-1][1],dp[i][0]+1);
			if(i<n&&s[i+1]==t[j]) dp[i+1][1]=min(dp[i+1][1],dp[i][0]+1);
		}
		for(int i=1;i<=n;i++) for(int j=1;j<=n;j++) if(s[i]==s[j]) dp[j][1]=min(dp[j][1],dp[i][1]+abs(i-j));
		for(int i=1;i<=n;i++) dp[i][0]=dp[i][1],dp[i][1]=1e9;
	}
	int ans=1e9;
	for(int i=1;i<=n;i++) ans=min(ans,dp[i][0]);
	if(ans==1e9) printf("-1\n"); else printf("%d\n",ans);
	return 0;
}

Compilation message (stderr)

bajka.cpp: In function 'int main()':
bajka.cpp:31:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |  scanf("%s",s+1);
      |  ~~~~~^~~~~~~~~~
bajka.cpp:32:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |  scanf("%s",t+1);
      |  ~~~~~^~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 50 / 50