#include <bits/stdc++.h> #define ll long long #define FOR(i,a,b) for(int i=a;i<=b;i++) #define ROF(i,a,b) for(int i=a;i>=b;i--) #define pi pair<int,int> #define pii pair<int,pi> #define fi first #define se second #define pb push_back #define all(x) x.begin(), x.end() #define sz(a) (int) a.size() #define endl '\n' #define data "data" using namespace std; const ll linf = 1e18; const int inf = 1e9; const int MOD = 1e9 + 7, N = 1e3; void add(int &a, int b) { a += b; if(a>=MOD) a-=MOD; if(a<0) a += MOD; } int modulo(int x) { if(x<=1) return 1; return (MOD - MOD/x) * modulo(MOD/x) % MOD; } int mul(int a, int b) { return (1ll *a%MOD * b%MOD) % MOD; } int n, m; char c[N+3][N+3]; char t[3][3]; void inp(void) { cin >> n >> m; FOR(i, 1, n) FOR(j, 1, m) cin >> c[i][j]; FOR(i, 1, 2) FOR(j, 1, 2) cin >> t[i][j]; } bool check(int i, int j) { if(c[i-1][j-1] != t[1][1]) return 0; if(c[i-1][j] != t[1][2]) return 0; if(c[i][j-1] != t[2][1]) return 0; if(c[i][j] != t[2][2]) return 0; return 1; } int calc(int i, int j, char ch) { int ret = 0; ret -= check(i, j); ret -= check(i, j + 1); ret -= check(i + 1, j); ret -= check(i + 1, j + 1); char pch = c[i][j]; c[i][j] = ch; ret += check(i, j); ret += check(i, j + 1); ret += check(i + 1, j); ret += check(i + 1, j + 1); c[i][j] = pch; return ret; } void solve(void) { int ans = 0; FOR(i, 1, n) FOR(j, 1, m) ans += check(i, j); int del = 0; FOR(i, 1, n) { FOR(j, 1, m) { del = max(del, calc(i, j, 'J')); del = max(del, calc(i, j, 'O')); del = max(del, calc(i, j, 'I')); } } cout << ans + del; } signed main() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); if(fopen(data".inp", "r")) { freopen(data".inp","r",stdin); freopen(data".out","w",stdout); } inp(); solve(); return 0; }

2014_ho_t1.cpp: In function 'int main()':
2014_ho_t1.cpp:102:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  102 |         freopen(data".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
2014_ho_t1.cpp:103:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  103 |         freopen(data".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~