oj.uz

답안 #530281

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
530281 2022-02-25T01:44:24 Z Leo121 Archery (IOI09_archery) C++14
80 / 100
 80 ms 2000 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){
        if(!ocupados[i]){
            return i;
        }
    }
}
int mayor(int pos){
    bool actual = 0;
    int unos = 0;
    forn(i, 1, 2 * n){
        if(i == 1){
            if(casillas[i - 1].primero == 1){
                unos ++;
            }
            if(casillas[i - 1].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 - 2){
                    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;
    return (posiciones[1] < n + 2) ? mayor(pos) : menor(pos);
}
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;
			}
		}
		res = ronda(posres);
		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:136:58: warning: narrowing conversion of '((posiciones[(i * 2)] < posiciones[1]) ? 1 : 0)' from 'int' to 'bool' [-Wnarrowing]
  136 |         casillas.pb({(posiciones[i * 2] < posiciones[1]) ? 1 : 0, (posiciones[i * 2 + 1] < posiciones[1]) ? 1 : 0, 0});
      |                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
archery.cpp:136:107: warning: narrowing conversion of '((posiciones[((i * 2) + 1)] < posiciones[1]) ? 1 : 0)' from 'int' to 'bool' [-Wnarrowing]
  136 |         casillas.pb({(posiciones[i * 2] < posiciones[1]) ? 1 : 0, (posiciones[i * 2 + 1] < posiciones[1]) ? 1 : 0, 0});
      |                                                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
archery.cpp:138:59: warning: narrowing conversion of '((posiciones[(pos * 2)] < posiciones[1]) ? 1 : 0)' from 'int' to 'bool' [-Wnarrowing]
  138 |     casillas.pb({0, (posiciones[pos * 2] < posiciones[1]) ? 1 : 0, 1});
      |                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
archery.cpp:140:62: warning: narrowing conversion of '((posiciones[((i * 2) - 1)] < posiciones[1]) ? 1 : 0)' from 'int' to 'bool' [-Wnarrowing]
  140 |         casillas.pb({(posiciones[i * 2 - 1] < posiciones[1]) ? 1 : 0, (posiciones[i * 2] < posiciones[1]) ? 1 : 0, 0});
      |                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
archery.cpp:140:107: warning: narrowing conversion of '((posiciones[(i * 2)] < posiciones[1]) ? 1 : 0)' from 'int' to 'bool' [-Wnarrowing]
  140 |         casillas.pb({(posiciones[i * 2 - 1] < posiciones[1]) ? 1 : 0, (posiciones[i * 2] < posiciones[1]) ? 1 : 0, 0});
      |                                                                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
archery.cpp:142:9: warning: unused variable 'aux' [-Wunused-variable]
  142 |     int aux;
      |         ^~~
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:190:6: warning: 'posres' may be used uninitialized in this function [-Wmaybe-uninitialized]
  190 |   li = posres + 1;
      |   ~~~^~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 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 1 ms 204 KB Output is correct

Subtask #2
74.0 / 94.0

# 결과 실행 시간 메모리 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 15 ms 716 KB Output is correct
5 Incorrect 80 ms 1608 KB Output isn't correct
6 Correct 0 ms 332 KB Output is correct
7 Incorrect 1 ms 332 KB Output isn't correct
8 Incorrect 9 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 24 ms 1144 KB Output isn't correct
14 Correct 3 ms 460 KB Output is correct
15 Correct 21 ms 1036 KB Output is correct
16 Incorrect 1 ms 332 KB Output isn't correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 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 780 KB Output is correct
22 Correct 22 ms 1036 KB Output is correct
23 Runtime error 17 ms 2000 KB Execution killed with signal 11
24 Correct 1 ms 204 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 3 ms 332 KB Output is correct
27 Correct 14 ms 672 KB Output is correct
28 Runtime error 18 ms 1996 KB Execution killed with signal 11
29 Correct 1 ms 332 KB Output is correct
30 Correct 3 ms 332 KB Output is correct
31 Correct 9 ms 588 KB Output is correct
32 Incorrect 35 ms 1340 KB Output isn't correct
33 Correct 0 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 1 ms 332 KB Output is correct
37 Correct 10 ms 572 KB Output is correct
38 Correct 15 ms 672 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 2 ms 332 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 2 ms 332 KB Output is correct
43 Correct 3 ms 332 KB Output is correct
44 Correct 5 ms 460 KB Output is correct
45 Correct 9 ms 588 KB Output is correct
46 Correct 11 ms 604 KB Output is correct
47 Incorrect 34 ms 1340 KB Output isn't correct