#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <iomanip>
#include <array>
#include <string>
#include <algorithm>
#include <cmath>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <bitset>
#include <list>
#include <iterator>
#include <numeric>
#include <complex>
#include <utility>
#include <random>
#include <cassert>
#include <fstream>
using namespace std;
mt19937 rnd(7069);
/* -------------------- Typedefs -------------------- */
typedef int itn;
typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef float fl;
typedef long double ld;
/* -------------------- Usings -------------------- */
using vi = vector<int>;
using vll = vector<ll>;
using mii = map<int, int>;
using mll = map<ll, ll>;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
/* -------------------- Defines -------------------- */
#define ff first
#define ss second
#define pub push_back
#define pob pop_back
#define puf push_front
#define pof pop_front
#define mpr make_pair
#define yes cout<<"Yes\n"
#define no cout<<"No\n"
#define all(x) (x).begin(), (x).end()
#define USACO freopen("feast.in", "r", stdin); freopen("feast.out", "w", stdout);
/* -------------------- Constants -------------------- */
const int MAX = int(2e9 + 5);
const ll MAXL = ll(1e18) + 5ll;
const ll MOD = ll(1000000007);
const ll MOD2 = ll(998244353);
/* -------------------- Functions -------------------- */
void fastio() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
}
void precision(int x) {
cout.setf(ios::fixed | ios::showpoint);
cout.precision(x);
}
ll gcd(ll a, ll b) {
if (a == 0 || b == 0) return(max(a, b));
while (b) {
a %= b;
swap(a, b);
}
return a;
}
ll lcm(ll a, ll b) {
return a / gcd(a, b) * b;
}
ll range_sum(ll a, ll b) {
ll dif = a - 1, cnt = b - a + 1;
ll ans = ((b - a + 1) * (b - a + 2)) / 2;
ans += ((b - a + 1) * dif);
return ans;
}
string dec_to_bin(ll a) {
string s = "";
for (ll i = a; i > 0; ) {
ll k = i % 2;
i /= 2;
char c = k + 48;
s += c;
}
if (a == 0) {
s = "0";
}
reverse(all(s));
return s;
}
ll bin_to_dec(string s) {
ll num = 0;
for (int i = 0; i < s.size(); i++) {
num *= 2ll;
num += (s[i] - '0');
}
return num;
}
ll factorial_by_mod(ll n, ll mod) {
ll ans = 1;
ll num;
for (ll i = 1; i <= n; ++i) {
num = i % mod;
ans *= num;
ans %= mod;
}
return ans;
}
int isPrime(ll a) {
if (a == 1) return 0;
for (ll i = 2; i * i <= a; i++) {
if (a % i == 0) return 0;
}
return 1;
}
ll binpow(ll a, ll b) {
if (!a) return 0;
ll ans = 1;
while (b) {
if (b & 1) {
ans *= a;
}
b >>= 1;
a *= a;
}
return ans;
}
ll binpow_by_mod(ll a, ll b, ll mod) {
if (!a) return 0;
ll ans = 1;
while (b) {
if (b & 1) {
ans *= a;
ans %= mod;
}
b >>= 1;
a *= a;
a %= mod;
}
return ans;
}
/* -------------------- Solution -------------------- */
const int N = 1005;
vector<pii> g[N][N];
char a[N][N];
int d[N][N];
int x1, yx, x2, y2;
int n, m;
void dijkstra() {
d[x1][yx] = 0;
priority_queue<pair<int, pii>> pq;
pq.push({ 0,{x1,yx} });
while (!pq.empty()) {
int dist = -pq.top().ff, x = pq.top().ss.ff, y = pq.top().ss.ss;
pq.pop();
if (dist > d[x][y]) continue;
for (auto to : g[x][y]) {
x1 = to.ff, yx = to.ss;
if (d[x1][yx] > d[x][y] + 1) {
d[x1][yx] = d[x][y] + 1;
pq.push({ -d[x1][yx],{x1,yx} });
}
}
}
cout << d[x2][y2];
}
void slv() {
cin >> n >> m;
for (int i = 1; i <= n; ++i) {
a[i][0] = '#';
a[i][m + 1] = '#';
for (int j = 1; j <= m; ++j) {
a[0][j] = '#';
a[n + 1][j] = '#';
cin >> a[i][j];
if (a[i][j] == 'S') {
x1 = i, yx = j;
}
else if (a[i][j] == 'C') {
x2 = i, y2 = j;
}
d[i][j] = MAX;
}
}
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= m; ++j) {
if (a[i][j] == '#') continue;
if (a[i - 1][j] == '#') {
//right
for (int ji = j; ji <= m; ++ji) {
if (a[i][ji + 1] == '#') {
g[i][j].pub({ i,ji });
g[i][ji].pub({ i,j });
break;
}
}
}
if (a[i][j - 1] == '#') {
//down
for (int ii = i; ii <= n; ++ii) {
if (a[ii + 1][j] == '#') {
g[ii][j].pub({ i,j });
g[i][j].pub({ ii,j });
break;
}
}
}
g[i + 1][j].pub({ i,j });
g[i - 1][j].pub({ i,j });
g[i][j + 1].pub({ i,j });
g[i][j - 1].pub({ i,j });
}
}
dijkstra();
}
void cs() {
int tstc = 1;
//cin >> tstc;
while (tstc--) {
slv();
}
}
void precalc() {
return;
}
int main() {
fastio();
precalc();
//precision(0);
cs();
return 0;
}
Compilation message
portals.cpp: In function 'll range_sum(ll, ll)':
portals.cpp:94:21: warning: unused variable 'cnt' [-Wunused-variable]
94 | ll dif = a - 1, cnt = b - a + 1;
| ^~~
portals.cpp: In function 'll bin_to_dec(std::string)':
portals.cpp:117:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
117 | for (int i = 0; i < s.size(); i++) {
| ~~^~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
11 ms |
26716 KB |
Output is correct |
| 2 |
Correct |
6 ms |
26716 KB |
Output is correct |
| 3 |
Incorrect |
7 ms |
26716 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
7 ms |
26820 KB |
Output is correct |
| 2 |
Correct |
7 ms |
26716 KB |
Output is correct |
| 3 |
Incorrect |
6 ms |
26840 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
7 ms |
26712 KB |
Output is correct |
| 2 |
Correct |
6 ms |
26716 KB |
Output is correct |
| 3 |
Incorrect |
6 ms |
26716 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
6 ms |
26716 KB |
Output is correct |
| 2 |
Correct |
6 ms |
26716 KB |
Output is correct |
| 3 |
Incorrect |
6 ms |
26892 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
7 ms |
26716 KB |
Output is correct |
| 2 |
Correct |
8 ms |
26716 KB |
Output is correct |
| 3 |
Incorrect |
7 ms |
26712 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
