Submission #956032

#	Time	Username	Problem	Language	Result	Execution time	Memory
956032		n3rm1n	Nautilus (BOI19_nautilus)	C++17	66 / 100	8 ms	10076 KiB

nautilus

#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
const int MAXN = 105;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}
int n, m, t;
int a[MAXN][MAXN];
string operations;

void read()
{
    cin >> n >> m >> t;
    char s;
    for (int i = 1; i <= n; ++ i)
    {
        for (int j = 1; j <= m; ++ j)
        {
            cin >> s;
            if(s == '#')a[i][j] = 1;
        }
    }
    cin >> operations;
    operations = '+' + operations;
}

int dp[MAXN][MAXN][MAXN];

void solve()
{
    for (int i = 1; i <= n; ++ i)
    {
        for (int j = 1; j <= m; ++ j)
        {
            if(!a[i][j])dp[i][j][0] = 1;

            }

    }

    for (int op = 1; op < operations.size(); ++ op)
    {
        for (int i = 1; i <= n; ++ i)
        {
            for (int j = 1; j <= m; ++ j)
            {
                if(a[i][j])continue;
                if(!dp[i][j][op-1])continue;
                if(operations[op] == 'N' || operations[op] == '?')
                {
                    dp[i-1][j][op] = 1;
                }
                if(operations[op] == 'S' || operations[op] == '?')
                {
                    dp[i+1][j][op] = 1;
                }
               if(operations[op] == 'E' || operations[op] == '?')
                {
                    dp[i][j+1][op] = 1;
                }
                if(operations[op] == 'W' || operations[op] == '?')
                {
                    dp[i][j-1][op] = 1;
                }
            }
        }
    }
    int ans = 0;
    for (int i = 1; i <= n; ++ i)
    {
        for (int j = 1; j <= m; ++ j)
            if(!a[i][j] && dp[i][j][t])ans ++;
    }
    cout << ans << endl;
}
int main()
{
    speed();

    read();
    solve();
    return 0;
}

Compilation message (stderr)

nautilus.cpp: In function 'void solve()':
nautilus.cpp:45:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |     for (int op = 1; op < operations.size(); ++ op)
      |                      ~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 29 / 29
• Subtask 2: 37 / 37
• Subtask 3: 0 / 34