CSES - Aalto Competitive Programming 2024 - wk4 - Mon - Results
Submission details
Task:Forest density
Sender:AleksandrPolitov
Submission time:2024-09-23 16:28:33 +0300
Language:C++ (C++20)
Status:READY
Result:ACCEPTED
Test results
testverdicttime
#1ACCEPTED0.00 sdetails
#2ACCEPTED0.38 sdetails
#3ACCEPTED0.37 sdetails

Code

#ifdef ONPC
#define _GLIBCXX_DEBUG
#endif
#include <bits/stdc++.h>
#define char unsigned char
#define rep(i, a, b) for(int i=a; i< (b); ++i)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
#define eb emplace_back
#define mp make_pair
#define mt make_tuple
#define fi first
#define se second
#define pb push_back
#define LSOne(S) ((S) & -(S))
using namespace std;
// mt19937 rnd(239);
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
typedef long long C;
typedef complex<C> P;
#define X real()
#define Y imag()
template<class T>
istream& operator>> (istream& is, complex<T>& p) {
T value;
is >> value;
p.real(value);
is >> value;
p.imag(value);
return is;
}
typedef long long ll;
typedef long double ld;
using pi = pair<ll, ll>;
using vi = vector<ll>;
template <class T>
using pq = priority_queue<T>;
template <class T>
using pqg = priority_queue<T, vector<T>, greater<T>>;
int popcnt(int x) { return __builtin_popcount(x); }
int popcnt(ll x) { return __builtin_popcountll(x); }
#define MIN(v) *min_element(all(v))
#define MAX(v) *max_element(all(v))
#define LB(c, x) distance((c).begin(), lower_bound(all(c), (x)))
#define UB(c, x) distance((c).begin(), upper_bound(all(c), (x)))
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}
template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ", "; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? ", " : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifdef DEBUG
#define dbg(x...) cerr << "\e[91m"<<__func__<<":"<<__LINE__<<" [" << #x << "] = ["; _print(x); cerr << "\e[39m" << endl;
#else
#define dbg(x...)
#endif
template<typename S, typename T = S> void chmin(S &s, T t) {s = s < t ? s : t;}
template<typename S, typename T = S> void chmax(S &s, T t) {s = s > t ? s : t;}
const int INF = 1e9; // 10^9 = 1B is < 2^31-1
const ll LLINF = 4e18; // 4*10^18 is < 2^63-1
const double EPS = 1e-9;
const ll MOD = 1e9+7;
const int N=1010;
int v[N][N];
int solve() {
int n, q; std::cin >> n >> q;
vector<vector<int>> pref(n+1, vector<int>(n+1, 0));
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
char c; std::cin >> c;
v[i][j]=(c=='*');
}
}
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
pref[i+1][j+1]=pref[i+1][j]+pref[i][j+1]-pref[i][j]+v[i][j];
}
}
//return 0;
// x1,y1
//
// x2,y2
while(q--) {
int y1, x1, y2, x2; std::cin >> y1 >> x1 >> y2 >> x2;
if(y2<y1) swap(y2, y1);
if(x2<x1) swap(x2, x1);
//std::cout << y1 << " " << x1 << " " << y2 << " " << x2 << std::endl;
//std::cout << << std::endl;
//std::cout << pref[y2][x2] << std::endl;
//std::cout << pref[y2][x1-1] << std::endl;
// std::cout << pref[y2][x1-1] << std::endl;
//std::cout << pref[y] << std::endl;
ll res=pref[y2][x2]-pref[y2][x1-1]-pref[y1-1][x2]+pref[y1-1][x1-1];
std::cout << res << std::endl;
}
return 0;
}
int32_t main() {
ios::sync_with_stdio(0);
cin.tie(0);
int TET = 1;
//cin >> TET;
for (int i = 1; i <= TET; i++) {
#ifdef ONPC
cout << "TEST CASE#" << i << endl;
#endif
if (solve()) {
break;
}
#ifdef ONPC
cout << "__________________________" << endl;
#endif
}
#ifdef ONPC
cerr << endl << "finished in " << clock() * 1.0 / CLOCKS_PER_SEC << " sec" << endl;
#endif
}

Test details

Test 1

Verdict: ACCEPTED

input
10 100
**.*.*.**.
*.**.*..*.
.*****.**.
**....***.
...

correct output
10
14
5
7
8
...

user output
10
14
5
7
8
...
Truncated

Test 2

Verdict: ACCEPTED

input
1000 200000
**.**.****..**.***..**.***.**....

correct output
41079
2824
15631
1548
8483
...

user output
41079
2824
15631
1548
8483
...
Truncated

Test 3

Verdict: ACCEPTED

input
1000 200000
******************************...

correct output
1000000
1000000
1000000
1000000
1000000
...

user output
1000000
1000000
1000000
1000000
1000000
...
Truncated