Submission #1325870

#	Time	Username	Problem	Language	Result	Execution time	Memory
1325870		abj	Tracks in the Snow (BOI13_tracks)	C++20	14.27 / 100	80 ms	18112 KiB

tracks

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

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int H, W;
    cin >> H >> W;
    vector<string> grid(H);
    for(int i = 0; i < H; i++) cin >> grid[i];
    int ans = 0;
    for(int i = 0; i < H; i++){
        for(int j = 0; j < W; j++){
            if(grid[i][j] == '.') continue;
            char c = grid[i][j];
            bool connected = false;
            if(i > 0 && grid[i-1][j] == c) connected = true;
            if(j > 0 && grid[i][j-1] == c) connected = true;
            if(!connected) ans++;
        }
    }
    cout << ans << "\n";
}

• Subtask 1: 3.3333 / 30
• Subtask 2: 10.9375 / 70