Submission #223285

#	Time	Username	Problem	Language	Result	Execution time	Memory
223285		jamielim	Trener (COCI20_trener)	C++14	0 / 110	7 ms	2432 KiB

trener

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
const ll MOD=1000000007;
string str[20][1505];
map<string,ll> dp;

int main(){
	int n,k;
	scanf("%d%d",&n,&k);
	char temp[55];
	for(int i=0;i<n;i++){
		for(int j=0;j<=n;j++)str[i][j]='\0';
		for(int j=0;j<k;j++){
			scanf("%s",temp);
			str[i][j]=temp;
		}
		sort(str[i],str[i]+k);
	}
	for(int i=0;i<k;i++){
		dp[str[0][i]]++;
	}
	for(int i=1;i<n;i++){
		for(int j=0;j<k;j++){
			string a,b;
			for(int l=0;l<i;l++){
				a+=str[i][j][l];
				b+=str[i][j][l+1];
			}
			dp[str[i][j]]+=dp[a];
			if(a!=b)dp[str[i][j]]+=dp[b];
			dp[str[i][j]]%=MOD;
		}
	}
	long long ans=0;
	for(int i=0;i<k;i++){ans+=dp[str[n-1][i]];ans%=MOD;}
	printf("%lld",ans);
}

Compilation message (stderr)

trener.cpp: In function 'int main()':
trener.cpp:11:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&k);
  ~~~~~^~~~~~~~~~~~~~
trener.cpp:16:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%s",temp);
    ~~~~~^~~~~~~~~~~

• Subtask 1: 0 / 22
• Subtask 2: 0 / 33
• Subtask 3: 0 / 55