Peg

#include <iostream>

using namespace std;

char d[7][7];

bool diff(char a, char b){
    return (a == '.' && b == 'o') || (b == '.' && a == 'o');
}

int main(){

    for(int i=0; i<7; i++){
        for(int j=0; j<7; j++){
            if((i<2 || i>4) && (j<2 || j>4)) continue;
            cin >> d[i][j];
        }
    }

    int ans = 0;
    for(int i=0; i<7; i++){
        for(int j=0; j<7; j++){
            if(d[i][j] != 'o') continue;
            if(i>0 && i<6 && diff(d[i-1][j], d[i+1][j])) ans++;
            if(j>0 && j<6 && diff(d[i][j-1], d[i][j+1])) ans++;
        }
    }

    cout << ans;

    return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED