제출 #972073

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
972073		Whisper	Lamps (JOI19_lamps)	C++17	4 / 100	108 ms	67128 KiB

lamp

#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define int long long
#define FOR(i, a, b) for (int i = a; i <= b; i++)
#define FORD(i, a, b) for (int i = b; i >= a; i --)
#define REP(i, n) for (int i = 0; i < n; ++i)
#define REPD(i, n) for (int i = n - 1; i >= 0; --i)

#define MASK(i) (1LL << (i))
#define BIT(x, i) (((x) >> (i)) & 1)

constexpr ll LINF = (1ll << 60);
constexpr int INF = (1ll << 30);
constexpr int Mod = 1e9 + 7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

void setupIO(){
    #define name "Whisper"
    //Phu Trong from Nguyen Tat Thanh High School for gifted student
    srand(time(NULL));
    cin.tie(nullptr)->sync_with_stdio(false); cout.tie(nullptr);
    //freopen(name".inp", "r", stdin);
    //freopen(name".out", "w", stdout);
    cout << fixed << setprecision(10);
}

template <class X, class Y>
    bool minimize(X &x, const Y &y){
        X eps = 1e-9;
        if (x > y + eps) {x = y; return 1;}
        return 0;
    }

template <class X, class Y>
    bool maximize(X &x, const Y &y){
        X eps = 1e-9;
        if (x + eps < y) {x = y; return 1;}
        return 0;
    }
int nArr;
string s, t;
const int MAX = 1e6 + 5;
int dp[MAX][2][3];

#define NOT 0
#define OFF 1
#define ON 2

int A[MAX], B[MAX];
void Whisper(){
    cin >> nArr >> s >> t;
    FOR(i, 1, nArr) A[i] = (s[i - 1] - '0');
    FOR(i, 1, nArr) B[i] = (t[i - 1] - '0');
    memset(dp, 0x3f, sizeof dp);
    dp[0][0][0] = 0;
    REP(i, nArr) REP(state, 2) REP(k, 3) REP(nxt_state, 2) REP(v, 3){
        int bit;
        if (v == NOT) bit = A[i + 1];
        else bit = v - 1;
        if(nxt_state) bit ^= 1;
        if(bit == B[i + 1])
            minimize(dp[i + 1][nxt_state][v], dp[i][state][k] + (k < v) + (state != nxt_state && nxt_state));
    }
    int ans = INF;
    REP(state, 2) REP(k, 3) minimize(ans, dp[nArr][state][k]);
    cout << ans;
}


signed main(){
    setupIO();
    int Test = 1;
//    cin >> Test;
    for ( int i = 1 ; i <= Test ; i++ ){
        Whisper();
        if (i < Test) cout << '\n';
    }
}

• Subtask 1: 0 / 6
• Subtask 2: 0 / 41
• Subtask 3: 4 / 4
• Subtask 4: 0 / 49