| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 530274 |
2022-02-25T01:25:19 Z |
Leo121 |
Archery (IOI09_archery) |
C++14 |
|
85 ms |
1996 KB |
#include <bits/stdc++.h>
#include <iostream>
#include <limits.h>
#include <stdio.h>
#include <algorithm>
#include <math.h>
#include <string.h>
#include <string>
#include <utility>
#include <vector>
#include <queue>
#include <set>
#include <unordered_set>
#include <map>
#define pb push_back
#define bg(v) v.begin()
#define all(v) bg(v), v.end()
#define mp make_pair
#define fi first
#define se second
#define forn(i, a, b) for(int i=int(a);i<=int(b);++i)
#define fora(i, a, b) for(int i=int(a);i>=int(b);--i)
#define lb lower_bound
#define ub upper_bound
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef unsigned int ui;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pii> vpii;
const int mod = 1e9 + 7;
const int movi[4] = {1, -1, 0, 0};
const int movj[4] = {0, 0, -1, 1};
const int lim = 1e5;
struct ura{
bool primero, segundo, actual;
};
int n, r, res, minimo;
int posiciones[2 * lim + 2];
bool ocupados[lim + 2];
vector<ura> casillas;
int menor(int pos){
forn(i, 1, n){
ocupados[i] = 0;
}
int llevados = 0;
fora(i, n, 2){
if(!casillas[i - 1].actual && !casillas[i - 1].primero){
llevados ++;
}
if(!casillas[i - 1].segundo){
llevados ++;
}
if(llevados){
ocupados[i] = 1;
llevados --;
}
}
if(!casillas[0].actual && !casillas[0].primero){
llevados ++;
}
if(!casillas[0].segundo){
llevados ++;
}
fora(i, n, 2){
if(!llevados){
break;
}
if(!ocupados[i]){
ocupados[i] = 1;
llevados --;
}
}
fora(i, pos, 2){
if(!ocupados[i]){
return i;
}
}
fora(i, n, pos + 1){
if(!ocupados[i]){
return i;
}
}
}
int mayor(int pos){
bool actual = 0;
int unos = 0;
bool primero, segundo;
forn(i, 1, 2 * n){
if(i == 1){
primero = casillas[i - 1].primero;
segundo = casillas[i - 1].segundo;
if(primero == 1){
unos ++;
}
if(segundo == 1){
unos ++;
}
actual = casillas[i - 1].actual;
} else{
if(casillas[i - 1].primero){
unos ++;
}
if(casillas[i - 1].segundo){
unos ++;
}
if(casillas[i - 1].actual){
actual = 1;
}
}
if(unos > 1){
casillas.pb({1, 0, 0});
unos --;
}
else if(unos == 1){
if(actual){
casillas.pb({0, 0, 1});
actual = 0;
if(i >= n){
return (n - ((r - i) % n));
}
}
else{
casillas.pb({0, 0, 0});
}
} else{
casillas.pb({0, 0, 0});
}
}
return 1;
}
int ronda(int pos){
casillas.clear();
forn(i, 1, pos - 1){
casillas.pb({(posiciones[i * 2] < posiciones[1]) ? 1 : 0, (posiciones[i * 2 + 1] < posiciones[1]) ? 1 : 0, 0});
}
casillas.pb({0, (posiciones[pos * 2] < posiciones[1]) ? 1 : 0, 1});
forn(i, pos + 1, n){
casillas.pb({(posiciones[i * 2 - 1] < posiciones[1]) ? 1 : 0, (posiciones[i * 2] < posiciones[1]) ? 1 : 0, 0});
}
int aux;
if(posiciones[1] >= n + 2){
aux = menor(pos);
}
else{
aux = mayor(pos);
}
return aux;
}
int bs(){
int li = 1, ls = n, mitad, auxiliar, res, posres;
if(posiciones[1] < n + 2){
posres = n;
res = ronda(n);
while(li <= ls){
mitad = (li + ls) / 2;
auxiliar = ronda(mitad);
if(auxiliar > res){
li = mitad + 1;
}
else{
ls = mitad - 1;
res = auxiliar;
posres = mitad;
}
}
li = posres;
ls = n;
while(li <= ls){
mitad = (li + ls) / 2;
auxiliar = ronda(mitad);
if(auxiliar == res){
posres = mitad;
li = mitad + 1;
}
else{
ls = mitad - 1;
}
}
}
else{
while(li <= ls){
mitad = (li + ls) / 2;
auxiliar = ronda(mitad);
if(auxiliar > mitad){
li = mitad + 1;
}
else{
posres = mitad;
ls = mitad - 1;
}
}
res = ronda(posres);
li = posres + 1;
ls = n;
while(li <= ls){
mitad = (li + ls) / 2;
auxiliar = ronda(mitad);
if(auxiliar == res){
posres = mitad;
li = mitad + 1;
}
else{
ls = mitad - 1;
}
}
}
return posres;
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> n >> r;
minimo = n;
forn(i, 1, 2 * n){
cin >> posiciones[i];
}
if(posiciones[1] == 1){
cout << n;
return 0;
}
cout << bs();
return 0;
}
Compilation message
archery.cpp: In function 'int ronda(int)':
archery.cpp:138:58: warning: narrowing conversion of '((posiciones[(i * 2)] < posiciones[1]) ? 1 : 0)' from 'int' to 'bool' [-Wnarrowing]
138 | casillas.pb({(posiciones[i * 2] < posiciones[1]) ? 1 : 0, (posiciones[i * 2 + 1] < posiciones[1]) ? 1 : 0, 0});
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
archery.cpp:138:107: warning: narrowing conversion of '((posiciones[((i * 2) + 1)] < posiciones[1]) ? 1 : 0)' from 'int' to 'bool' [-Wnarrowing]
138 | casillas.pb({(posiciones[i * 2] < posiciones[1]) ? 1 : 0, (posiciones[i * 2 + 1] < posiciones[1]) ? 1 : 0, 0});
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
archery.cpp:140:59: warning: narrowing conversion of '((posiciones[(pos * 2)] < posiciones[1]) ? 1 : 0)' from 'int' to 'bool' [-Wnarrowing]
140 | casillas.pb({0, (posiciones[pos * 2] < posiciones[1]) ? 1 : 0, 1});
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
archery.cpp:142:62: warning: narrowing conversion of '((posiciones[((i * 2) - 1)] < posiciones[1]) ? 1 : 0)' from 'int' to 'bool' [-Wnarrowing]
142 | casillas.pb({(posiciones[i * 2 - 1] < posiciones[1]) ? 1 : 0, (posiciones[i * 2] < posiciones[1]) ? 1 : 0, 0});
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
archery.cpp:142:107: warning: narrowing conversion of '((posiciones[(i * 2)] < posiciones[1]) ? 1 : 0)' from 'int' to 'bool' [-Wnarrowing]
142 | casillas.pb({(posiciones[i * 2 - 1] < posiciones[1]) ? 1 : 0, (posiciones[i * 2] < posiciones[1]) ? 1 : 0, 0});
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
archery.cpp: In function 'int menor(int)':
archery.cpp:87:1: warning: control reaches end of non-void function [-Wreturn-type]
87 | }
| ^
archery.cpp: In function 'int bs()':
archery.cpp:197:6: warning: 'posres' may be used uninitialized in this function [-Wmaybe-uninitialized]
197 | li = posres + 1;
| ~~~^~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
2 ms |
332 KB |
Output is correct |
| 5 |
Correct |
0 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
1 ms |
332 KB |
Output is correct |
| 4 |
Correct |
11 ms |
716 KB |
Output is correct |
| 5 |
Incorrect |
85 ms |
1576 KB |
Output isn't correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| 7 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 8 |
Incorrect |
8 ms |
716 KB |
Output isn't correct |
| 9 |
Correct |
13 ms |
780 KB |
Output is correct |
| 10 |
Incorrect |
1 ms |
332 KB |
Output isn't correct |
| 11 |
Correct |
14 ms |
780 KB |
Output is correct |
| 12 |
Correct |
2 ms |
332 KB |
Output is correct |
| 13 |
Incorrect |
18 ms |
1100 KB |
Output isn't correct |
| 14 |
Correct |
3 ms |
460 KB |
Output is correct |
| 15 |
Correct |
19 ms |
1036 KB |
Output is correct |
| 16 |
Incorrect |
1 ms |
204 KB |
Output isn't correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
2 ms |
332 KB |
Output is correct |
| 19 |
Correct |
2 ms |
332 KB |
Output is correct |
| 20 |
Correct |
3 ms |
332 KB |
Output is correct |
| 21 |
Correct |
12 ms |
756 KB |
Output is correct |
| 22 |
Correct |
17 ms |
1036 KB |
Output is correct |
| 23 |
Runtime error |
19 ms |
1996 KB |
Execution killed with signal 11 |
| 24 |
Correct |
1 ms |
204 KB |
Output is correct |
| 25 |
Correct |
1 ms |
332 KB |
Output is correct |
| 26 |
Correct |
3 ms |
332 KB |
Output is correct |
| 27 |
Correct |
14 ms |
664 KB |
Output is correct |
| 28 |
Runtime error |
17 ms |
1964 KB |
Execution killed with signal 11 |
| 29 |
Correct |
1 ms |
332 KB |
Output is correct |
| 30 |
Correct |
2 ms |
332 KB |
Output is correct |
| 31 |
Correct |
9 ms |
588 KB |
Output is correct |
| 32 |
Incorrect |
35 ms |
1376 KB |
Output isn't correct |
| 33 |
Correct |
1 ms |
204 KB |
Output is correct |
| 34 |
Correct |
0 ms |
204 KB |
Output is correct |
| 35 |
Correct |
1 ms |
332 KB |
Output is correct |
| 36 |
Correct |
2 ms |
332 KB |
Output is correct |
| 37 |
Correct |
9 ms |
588 KB |
Output is correct |
| 38 |
Correct |
12 ms |
588 KB |
Output is correct |
| 39 |
Correct |
1 ms |
204 KB |
Output is correct |
| 40 |
Correct |
1 ms |
332 KB |
Output is correct |
| 41 |
Correct |
1 ms |
332 KB |
Output is correct |
| 42 |
Correct |
1 ms |
332 KB |
Output is correct |
| 43 |
Correct |
2 ms |
332 KB |
Output is correct |
| 44 |
Correct |
5 ms |
496 KB |
Output is correct |
| 45 |
Correct |
9 ms |
628 KB |
Output is correct |
| 46 |
Correct |
11 ms |
596 KB |
Output is correct |
| 47 |
Incorrect |
34 ms |
1364 KB |
Output isn't correct |
