oj.uz

Submission #216274

# Submission time Handle Problem Language Result Execution time Memory
216274 2020-03-27T02:08:24 Z rqi Bitaro the Brave (JOI19_ho_t1) C++14
100 / 100
 310 ms 115196 KB 
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef long double ld;
typedef double db; 
typedef string str; 

typedef pair<int,int> pi;
typedef pair<ll,ll> pl; 
typedef pair<db,db> pd; 

typedef vector<int> vi; 
typedef vector<ll> vl; 
typedef vector<db> vd; 
typedef vector<str> vs; 
typedef vector<pi> vpi;
typedef vector<pl> vpl; 
typedef vector<pd> vpd; 

#define mp make_pair 
#define f first
#define s second
#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) (x).rbegin(), (x).rend() 
#define rsz resize
#define ins insert 
#define ft front() 
#define bk back()
#define pf push_front 
#define pb push_back
#define eb emplace_back 
#define lb lower_bound 
#define ub upper_bound 

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

const int MOD = 1e9+7; // 998244353;
const int MX = 2e5+5; 
const ll INF = 1e18; 
const ld PI = acos((ld)-1);
const int xd[4] = {1,0,-1,0}, yd[4] = {0,1,0,-1}; 

template<class T> bool ckmin(T& a, const T& b) { 
    return b < a ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { 
    return a < b ? a = b, 1 : 0; } 
int pct(int x) { return __builtin_popcount(x); } 
int bit(int x) { return 31-__builtin_clz(x); } // floor(log2(x)) 
int cdiv(int a, int b) { return a/b+!(a<0||a%b == 0); } // division of a by b rounded up, assumes b > 0 

// INPUT
template<class A> void re(complex<A>& c);
template<class A, class B> void re(pair<A,B>& p);
template<class A> void re(vector<A>& v);
template<class A, size_t SZ> void re(array<A,SZ>& a);

template<class T> void re(T& x) { cin >> x; }
void re(db& d) { str t; re(t); d = stod(t); }
void re(ld& d) { str t; re(t); d = stold(t); }
template<class H, class... T> void re(H& h, T&... t) { re(h); re(t...); }

template<class A> void re(complex<A>& c) { A a,b; re(a,b); c = {a,b}; }
template<class A, class B> void re(pair<A,B>& p) { re(p.f,p.s); }
template<class A> void re(vector<A>& x) { trav(a,x) re(a); }
template<class A, size_t SZ> void re(array<A,SZ>& x) { trav(a,x) re(a); }

// TO_STRING
#define ts to_string
template<class A, class B> str ts(pair<A,B> p);
template<class A> str ts(complex<A> c) { return ts(mp(c.real(),c.imag())); }
str ts(bool b) { return b ? "true" : "false"; }
str ts(char c) { str s = ""; s += c; return s; }
str ts(str s) { return s; }
str ts(const char* s) { return (str)s; }
str ts(vector<bool> v) { 
    bool fst = 1; str res = "{";
    F0R(i,sz(v)) {
        if (!fst) res += ", ";
        fst = 0; res += ts(v[i]);
    }
    res += "}"; return res;
}
template<size_t SZ> str ts(bitset<SZ> b) {
    str res = ""; F0R(i,SZ) res += char('0'+b[i]);
    return res; }
template<class T> str ts(T v) {
    bool fst = 1; str res = "{";
    for (const auto& x: v) {
        if (!fst) res += ", ";
        fst = 0; res += ts(x);
    }
    res += "}"; return res;
}
template<class A, class B> str ts(pair<A,B> p) {
    return "("+ts(p.f)+", "+ts(p.s)+")"; }

// OUTPUT
template<class A> void pr(A x) { cout << ts(x); }
template<class H, class... T> void pr(const H& h, const T&... t) { 
    pr(h); pr(t...); }
void ps() { pr("\n"); } // print w/ spaces
template<class H, class... T> void ps(const H& h, const T&... t) { 
    pr(h); if (sizeof...(t)) pr(" "); ps(t...); }

// DEBUG
void DBG() { cerr << "]" << endl; }
template<class H, class... T> void DBG(H h, T... t) {
    cerr << to_string(h); if (sizeof...(t)) cerr << ", ";
    DBG(t...); }
#ifdef LOCAL // compile with -DLOCAL
#define dbg(...) cerr << "[" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define dbg(...) 42
#endif

// FILE I/O
void setIn(string s) { freopen(s.c_str(),"r",stdin); }
void setOut(string s) { freopen(s.c_str(),"w",stdout); }
void unsyncIO() { ios_base::sync_with_stdio(0); cin.tie(0); }
void setIO(string s = "") {
    unsyncIO();
    // cin.exceptions(cin.failbit); 
    // throws exception when do smth illegal
    // ex. try to read letter into int
    if (sz(s)) { setIn(s+".in"), setOut(s+".out"); } // for USACO
}

mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count()); 

int jewel[3005][3005];
int orb[3005][3005];
int ingot[3005][3005];
int main() {
    setIO();
    int H, W;
    cin >> H >> W;
    for(int i = 1; i <= H; i++){
        string s;
        cin >> s;
        for(int j = 1; j <= W; j++){
            if(s[j-1] == 'J'){
                jewel[i][j] = 1;
            }
            else if(s[j-1] == 'O'){
                orb[i][j] = 1;
            }
            else ingot[i][j] = 1;
        }
    }

    
    for(int i = 1; i <= H; i++){
        for(int j = W-1; j >= 1; j--){
            orb[i][j]+=orb[i][j+1];
        }
    }
    for(int j = 1; j <= W; j++){
        for(int i = H-1; i >= 1; i--){
            ingot[i][j]+=ingot[i+1][j];
        }
    }
    ll ans = 0;
    for(int i = 1; i <= H; i++){
        for(int j = 1; j <= W; j++){
            if(jewel[i][j] == 1){
                ans+=ll(orb[i][j])*ll(ingot[i][j]);
            }
        }
    }
    ps(ans);
    // you should actually read the stuff at the bottom
}

/* stuff you should look for
    * int overflow, array bounds
    * special cases (n=1?)
    * do smth instead of nothing and stay organized
    * WRITE STUFF DOWN
*/

Compilation message

joi2019_ho_t1.cpp: In function 'void setIn(std::__cxx11::string)':
joi2019_ho_t1.cpp:123:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
 void setIn(string s) { freopen(s.c_str(),"r",stdin); }
                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t1.cpp: In function 'void setOut(std::__cxx11::string)':
joi2019_ho_t1.cpp:124:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
 void setOut(string s) { freopen(s.c_str(),"w",stdout); }
                         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 5 ms 1664 KB Output is correct
6 Correct 5 ms 1664 KB Output is correct
7 Correct 5 ms 1536 KB Output is correct
8 Correct 6 ms 1664 KB Output is correct
9 Correct 5 ms 1664 KB Output is correct
10 Correct 5 ms 1536 KB Output is correct
11 Correct 5 ms 1664 KB Output is correct
12 Correct 6 ms 1664 KB Output is correct
13 Correct 6 ms 1536 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 5 ms 1664 KB Output is correct
6 Correct 5 ms 1664 KB Output is correct
7 Correct 5 ms 1536 KB Output is correct
8 Correct 6 ms 1664 KB Output is correct
9 Correct 5 ms 1664 KB Output is correct
10 Correct 5 ms 1536 KB Output is correct
11 Correct 5 ms 1664 KB Output is correct
12 Correct 6 ms 1664 KB Output is correct
13 Correct 6 ms 1536 KB Output is correct
14 Correct 12 ms 8832 KB Output is correct
15 Correct 7 ms 5376 KB Output is correct
16 Correct 8 ms 4864 KB Output is correct
17 Correct 5 ms 512 KB Output is correct
18 Correct 19 ms 9600 KB Output is correct
19 Correct 11 ms 8960 KB Output is correct
20 Correct 11 ms 8704 KB Output is correct
21 Correct 13 ms 9600 KB Output is correct
22 Correct 11 ms 9088 KB Output is correct
23 Correct 11 ms 8704 KB Output is correct
24 Correct 13 ms 9600 KB Output is correct
25 Correct 11 ms 8960 KB Output is correct
26 Correct 11 ms 8704 KB Output is correct

Subtask #3
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 512 KB Output is correct
5 Correct 5 ms 1664 KB Output is correct
6 Correct 5 ms 1664 KB Output is correct
7 Correct 5 ms 1536 KB Output is correct
8 Correct 6 ms 1664 KB Output is correct
9 Correct 5 ms 1664 KB Output is correct
10 Correct 5 ms 1536 KB Output is correct
11 Correct 5 ms 1664 KB Output is correct
12 Correct 6 ms 1664 KB Output is correct
13 Correct 6 ms 1536 KB Output is correct
14 Correct 12 ms 8832 KB Output is correct
15 Correct 7 ms 5376 KB Output is correct
16 Correct 8 ms 4864 KB Output is correct
17 Correct 5 ms 512 KB Output is correct
18 Correct 19 ms 9600 KB Output is correct
19 Correct 11 ms 8960 KB Output is correct
20 Correct 11 ms 8704 KB Output is correct
21 Correct 13 ms 9600 KB Output is correct
22 Correct 11 ms 9088 KB Output is correct
23 Correct 11 ms 8704 KB Output is correct
24 Correct 13 ms 9600 KB Output is correct
25 Correct 11 ms 8960 KB Output is correct
26 Correct 11 ms 8704 KB Output is correct
27 Correct 310 ms 114604 KB Output is correct
28 Correct 17 ms 28032 KB Output is correct
29 Correct 14 ms 8960 KB Output is correct
30 Correct 5 ms 768 KB Output is correct
31 Correct 247 ms 94712 KB Output is correct
32 Correct 224 ms 108024 KB Output is correct
33 Correct 192 ms 103160 KB Output is correct
34 Correct 249 ms 109816 KB Output is correct
35 Correct 218 ms 109816 KB Output is correct
36 Correct 200 ms 103160 KB Output is correct
37 Correct 302 ms 115196 KB Output is correct
38 Correct 158 ms 87544 KB Output is correct
39 Correct 146 ms 83192 KB Output is correct