Submission #236124

#TimeUsernameProblemLanguageResultExecution timeMemory
236124ne4eHbKaRetro (COCI17_retro)C++17
12 / 100
1117 ms333820 KiB
//{ <defines> #include <bits/stdc++.h> using namespace std; //#pragma comment(linker, "/stack:200000000") //#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") //#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,-O3") #define fr(i, n) for(int i = 0; i < n; ++i) #define fo(n) fr(i, n) #define re return #define ef else if #define ifn(x) if(!(x)) #define _ << ' ' << #define ft first #define sd second #define ve vector #define pb push_back #define eb emplace_back #define sz(x) int((x).size()) #define bnd(x) x.begin(), x.end() #define clr(x, y) memset((x), (y), sizeof (x)) typedef long long ll; typedef long double ld; typedef pair<int, int> pii; typedef pair<ll, ll> pll; typedef ve<int> vi; inline ll time() {re chrono :: system_clock().now().time_since_epoch().count();} mt19937 rnd(time()); mt19937_64 RND(time()); template<typename t> inline void umin(t &a, t b) {a = min(a, b);} template<typename t> inline void umax(t &a, t b) {a = max(a, b);} int md = 998244353; inline int m_add(int&a, int b) {a += b; if(a < 0) a += md; if(a >= md) a -= md; re a;} inline int m_sum(int a, int b) {a += b; if(a < 0) a += md; if(a >= md) a -= md; re a;} inline int m_mul(int&a, int b) {re a = 1ll * a * b % md;} inline int m_prod(int a, int b) {re 1ll * a * b % md;} int m_bpow(ll A, ll b) { int a = A % md; ll ans = 1; for(ll p = 1ll << 63 - __builtin_clzll(b); p; p >>= 1) { (ans *= ans) %= md; if(p & b) (ans *= a) %= md; } re ans; } //const ld pi = arg(complex<ld>(-1, 0)); //const ld pi2 = pi + pi; const int oo = 2e9; const ll OO = 4e18; //} </defines> const int N = 305; int f[N][N][N]; int pr[N][N][N]; int o[N][N][N]; string s[N]; int n, m; string st(int i, int j, int b) { string u; if(i < 0 || s[i][j] == '*') re u; if(s[i][j] != '.' && s[i][j] != 'M') u += s[i][j]; u += st(i - 1, pr[i][j][b], b + (s[i][j] == '(' ? +1 : s[i][j] == ')' ? -1 : 0)); re u; } pair<int, int> c(int i, int j, int b) { if(j >= 0 && j < m && (i < 0 || s[i][j] == '*') && !b) re {0, 0}; if(i < 0 || j < 0 || j >= m || b < 0 || b > i + 1 || s[i][j] == '*') re {-1, 0}; int &ans = f[i][j][b], &p = pr[i][j][b], &op = o[i][j][b]; if(ans < oo) re {ans, op}; bool br = false; if(s[i][j] == ')') --b, br = true; if(s[i][j] == '(') ++b, br = true; ans = p = -1; for(int z = j - 1; z <= j + 1; ++z) { auto v = c(i - 1, z, b); if(~v.ft) { int u = v.ft + br; if(u > ans || u == ans && v.sd > op || v.sd == op && st(i - 1, z, b) < st(i - 1, p, b)) { ans = u; op = v.sd; p = z; } } } if(s[i][j] == '(') ++op; if(s[i][j] == ')') op = 0; re {ans, op}; } void solve() { clr(f, 127); clr(pr, -1); clr(o, 0); cin >> n >> m; fo(n) cin >> s[i]; int M {}; for(int i = 0; i < m; ++i) if(s[n - 1][i] == 'M') M = i; int v = c(n - 1, M, 0).ft, b = 0; cout << v << endl << st(n - 1, M, 0) << endl; } int main() { #ifdef _LOCAL freopen("in.txt", "r", stdin); int tests; cin >> tests; for(int test = 1; test <= tests; ++test) { cerr << "case #" << test << endl; solve(); cerr << endl; } #else // freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout); ios_base :: sync_with_stdio(0); cin.tie(0); cout.tie(0); solve(); #endif return 0; }

Compilation message (stderr)

retro.cpp: In function 'int m_bpow(ll, ll)':
retro.cpp:50:26: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
     for(ll p = 1ll << 63 - __builtin_clzll(b); p; p >>= 1) {
                       ~~~^~~~~~~~~~~~~~~~~~~~
retro.cpp: In function 'std::pair<int, int> c(int, int, int)':
retro.cpp:93:36: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
             if(u > ans || u == ans && v.sd > op || v.sd == op && st(i - 1, z, b) < st(i - 1, p, b)) {
                           ~~~~~~~~~^~~~~~~~~~~~
retro.cpp:93:63: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
             if(u > ans || u == ans && v.sd > op || v.sd == op && st(i - 1, z, b) < st(i - 1, p, b)) {
                                                    ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
retro.cpp: In function 'void solve()':
retro.cpp:114:32: warning: unused variable 'b' [-Wunused-variable]
     int v = c(n - 1, M, 0).ft, b = 0;
                                ^
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