| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 760440 |
2023-06-17T14:58:21 Z |
GrindMachine |
Tram (CEOI13_tram) |
C++17 |
|
1000 ms |
1516 KB |
// Om Namah Shivaya
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x, y) ((x + y - 1) / (y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl
#define rep(i, n) for(int i = 0; i < n; ++i)
#define rep1(i, n) for(int i = 1; i <= n; ++i)
#define rev(i, s, e) for(int i = s; i >= e; --i)
#define trav(i, a) for(auto &i : a)
template<typename T>
void amin(T &a, T b) {
a = min(a, b);
}
template<typename T>
void amax(T &a, T b) {
a = max(a, b);
}
#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif
/*
*/
const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;
ll sq(ll x){
if(x > inf1) return x;
return x * x;
}
void solve(int test_case)
{
ll n,m; cin >> n >> m;
vector<pll> sit(m+5);
bool here[n+5][2];
memset(here,0,sizeof here);
multiset<ll> ms;
ll active = 0;
rep1(id,m){
char t; cin >> t;
if(t == 'E'){
active++;
if(active == 1){
cout << "1 1" << endl;
ms.insert(1);
here[1][1] = 1;
sit[id] = {1,1};
conts;
}
vector<ll> v(all(ms));
vector<ll> cand;
cand.pb(1);
cand.pb(n);
rep(i,sz(v)-1){
ll x = (v[i] + v[i+1]) / 2;
ll y = ceil2(v[i] + v[i+1], 2);
cand.pb(x);
cand.pb(y);
}
sort(all(cand));
cand.resize(unique(all(cand)) - cand.begin());
ll mx = -1;
pll px = {-1,-1};
trav(i,cand){
rep1(j,2){
auto it = ms.lower_bound(i);
ll mn = inf2;
if(it != ms.end()){
ll r = *it;
rep1(j2,2){
if(here[r][j2]){
ll cost = sq(i-r) + (j != j2);
amin(mn, cost);
}
}
}
if(it != ms.begin()){
it--;
ll r = *it;
rep1(j2,2){
if(here[r][j2]){
ll cost = sq(i-r) + (j != j2);
amin(mn, cost);
}
}
}
// cout << i << " " << j << endl;
// debug(mn);
if(mn > mx){
mx = mn;
px = {i,j};
}
}
}
cout << px.ff << " " << px.ss << endl;
// cout << endl;
sit[id] = px;
ms.insert(px.ff);
here[px.ff][px.ss] = 1;
}
else{
ll k; cin >> k;
auto [i,j] = sit[k];
ms.erase(ms.find(i));
here[i][j] = 0;
active--;
}
}
}
int main()
{
fastio;
int t = 1;
// cin >> t;
rep1(i, t) {
solve(i);
}
return 0;
}
Compilation message
tram.cpp: In function 'void solve(int)':
tram.cpp:30:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
30 | #define rep(i, n) for(int i = 0; i < n; ++i)
......
93 | rep(i,sz(v)-1){
| ~~~~~~~~~
tram.cpp:93:13: note: in expansion of macro 'rep'
93 | rep(i,sz(v)-1){
| ^~~
tram.cpp:114:42: warning: iteration 1 invokes undefined behavior [-Waggressive-loop-optimizations]
114 | if(here[r][j2]){
| ~~~~~~~~~~^
tram.cpp:31:37: note: within this loop
31 | #define rep1(i, n) for(int i = 1; i <= n; ++i)
......
113 | rep1(j2,2){
| ~~~~
tram.cpp:113:25: note: in expansion of macro 'rep1'
113 | rep1(j2,2){
| ^~~~
tram.cpp:125:42: warning: iteration 1 invokes undefined behavior [-Waggressive-loop-optimizations]
125 | if(here[r][j2]){
| ~~~~~~~~~~^
tram.cpp:31:37: note: within this loop
31 | #define rep1(i, n) for(int i = 1; i <= n; ++i)
......
124 | rep1(j2,2){
| ~~~~
tram.cpp:124:25: note: in expansion of macro 'rep1'
124 | rep1(j2,2){
| ^~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
324 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
181 ms |
440 KB |
Output is correct |
| 2 |
Correct |
7 ms |
340 KB |
Output is correct |
| 3 |
Correct |
29 ms |
340 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
186 ms |
448 KB |
Output is correct |
| 2 |
Correct |
7 ms |
340 KB |
Output is correct |
| 3 |
Correct |
29 ms |
340 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
196 ms |
796 KB |
Output is correct |
| 2 |
Correct |
7 ms |
328 KB |
Output is correct |
| 3 |
Correct |
33 ms |
712 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
196 ms |
792 KB |
Output is correct |
| 2 |
Correct |
8 ms |
320 KB |
Output is correct |
| 3 |
Correct |
28 ms |
708 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1076 ms |
1212 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1062 ms |
1516 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
