Submission #341548

#	Time	Username	Problem	Language	Result	Execution time	Memory
341548		A_D	Trener (COCI20_trener)	C++14	22 / 110	23 ms	9452 KiB

trener

/*
ID: antwand1
TASK: pprime
LANG: C++
*/
#include <bits/stdc++.h>
#define ll long long
#define du long double
#define F first
#define S second
#define FOR(a,b) for(int a=1;a<=b;a++)
#define FORl(a,b) for(a=1;a<=b;a++)
#define FOR0(a,b) for(int a=1;a<b;a++)
#define FORl0(a,b) for(a=0;a<b;a++)
#define ii pair<int,int>
using namespace std;
const int MOD=1e9+7;
const int N=55;
const int M=1511;
string a[N][M];
ll dp[N][M];
string sub[N][M][2];
int n,m;
string get(string&s,int l,int r)
{
    string ret;
    for(int i=l;i<=r;i++)ret+=s[i];return ret;
}
int bc(int i,int j)
{
    ll&ret=dp[i][j];
    if(ret!=-1)return ret;
    if(i==n+1){
        return ret=1;
    }
    ret=0;
    for(int x=1;x<=m;x++){
        if(i==1){
            ret+=bc(i+1,x);
        }
        else{
            if(a[i-1][j]==sub[i][x][0]||a[i-1][j]==sub[i][x][1])ret+=bc(i+1,x)%MOD;
            ret%=MOD;
        }
    }
    return ret;
}
main()
{
    memset(dp,-1,sizeof(dp));
    cin>>n>>m;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            cin>>a[i][j];
            for(int k=0;k<2;k++){
                sub[i][j][k]=get(a[i][j],k,k+i-2);
            }
        }
    }
    cout<<bc(1,1)%MOD;
}

Compilation message (stderr)

trener.cpp: In function 'std::string get(std::string&, int, int)':
trener.cpp:27:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   27 |     for(int i=l;i<=r;i++)ret+=s[i];return ret;
      |     ^~~
trener.cpp:27:36: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   27 |     for(int i=l;i<=r;i++)ret+=s[i];return ret;
      |                                    ^~~~~~
trener.cpp: At global scope:
trener.cpp:48:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   48 | main()
      |      ^

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