Submission #1090830

#TimeUsernameProblemLanguageResultExecution timeMemory
1090830ivan_alexeevDango Maker (JOI18_dango_maker)C++17
100 / 100
575 ms45120 KiB
#include <bits/stdc++.h> #include <ext/pb_ds/assoc_container.hpp> using namespace __gnu_pbds; #ifdef lisie_bimbi #else #define endl '\n' #endif typedef long long ll; const ll inf = 1'000'000'000'000'000'000; using namespace std; #pragma GCC optimize("O3") #pragma GCC target("avx,avx2,bmi2,fma,popcnt") //#define int long long int n, m; vector<vector<int>> z; bool get(int x, int y, bool f){ if((x >= 0) && (x < n) && (y >= 0) && (y < m)){ }else{ return 0; } if(f){ if(x + 2 < n){ return ((z[x][y] == 0) && (z[x + 1][y] == 1) && (z[x + 2][y] == 2)); }else{ return 0; } }else{ if(y + 2 < m){ return ((z[x][y] == 0) && (z[x][y + 1] == 1) && (z[x][y + 2] == 2)); }else{ return 0; } } } int solve1(vector<int> a, vector<int> b){ /* for(auto i : a){ cout << i << " "; } cout << endl; for(auto i : b){ cout << i << " "; } cout << endl; cout << endl; */ int n = a.size(); vector<vector<int>> dp(n + 1, vector<int>(3)); dp[0] = {0, 0, 0}; for(int i = 0; i < n; i++){ dp[i + 1][0] = dp[i][0]; dp[i + 1][1] = dp[i][0]; dp[i + 1][2] = dp[i][1]; if(b[i]){ dp[i + 1][0] = max(dp[i + 1][0], dp[i][0] + 1); } if(a[i]){ dp[i + 1][0] = max(dp[i + 1][0], dp[i][2] + 1); dp[i + 1][1] = max(dp[i + 1][1], dp[i][2] + 1); dp[i + 1][2] = max(dp[i + 1][2], dp[i][2] + 1); } } return dp.back()[0]; } void solve(){ cin >> n >> m; z.resize(n, vector<int>(m)); for(int i = 0; i < n; i++){ string s; cin >> s; for(int j = 0; j < m; j++){ if(s[j] == 'R'){ z[i][j] = 0; }else if(s[j] == 'G'){ z[i][j] = 1; }else{ z[i][j] = 2; } } } int ans = 0; for(int sum = 0; sum < n + m - 1; sum++){ vector<int> a, b; for(int j = 0; j < m; j++){ int i = sum - j; if((i >= 0) && (i < n)){ a.push_back(get(i, j, 1)); b.push_back(get(i, j, 0)); } } ans += solve1(a, b); } cout << ans << endl; } signed main(){ #ifdef lisie_bimbi freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout); #else cin.tie(nullptr)->sync_with_stdio(false); #endif cout << setprecision(5) << fixed; int _ = 1; //cin >> t; while(_--){ solve(); } return 0; }
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