oj.uz

답안 #983135

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
983135 2024-05-15T08:37:44 Z vjudge1 가로등 (APIO19_street_lamps) C++17
40 / 100
 123 ms 25316 KB 
#include <bits/stdc++.h>

using namespace std;

#define TL ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define rall(s) s.rbegin(),s.rend()
#define all(s) s.begin(),s.end()
#define pb push_back
#define se second
#define fi first
#define ll long long
#define ld long double
#define YES cout<<"YES\n"
#define Yes cout<<"Yes\n"
#define yes cout<<"yes\n"
#define NO cout<<"NO\n"
#define No cout<<"No\n"
#define no cout<<"no\n"


const int N = 5e5 + 9 , mod = 1e9 + 7;
ll a[N] , b[N] , dp[N] ,  p[N] , sz[N] ,  d[N] , t[N];
ll  c[109][109];


ll get(int x){
    return (p[x] == x ? x : get(p[x]));
}
ll get1(int x , vector<pair<int,int>>&v){
    v.pb({x , t[x]});
    return (p[x] == x ? x : get1(p[x] , v));
}
void join(int x , int y , int k){
    x = get(x) , y = get(y);
    if(x != y){
        if(sz[x] < sz[y])
        swap(x , y);
        p[y] = x;
        sz[x] += sz[y];
        t[y] = k;
    }
}

void solve()
{
    ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mx = 0 , mn = 1e18;
    cin>>n>>q;
    string str;
    cin>>str;
    set<pair<int,pair<int,int>>>st;
    for(i = 1; i <= n; i++)
        p[i] = i , sz[i] = 1;
    for(i = 1; i <= n; i++){
        a[i] = str[i - 1] - '0';
        if(n <= 100)
            c[0][i] = c[0][i - 1] + (a[i] == 0) ;
        if(a[i] == 1)
            join(i , i + 1 , 0);
    }
    for(j = 1; j <= q;j ++){
        cin>>str>>x;
        if(str[0] == 'q')
            cin>>y;
        if(str[0] == 't'){
            join(x , x + 1 , j);
            a[x] = 1 - a[x];
            if(a[x] == 0)
                d[x] += j - b[x];
            b[x] = j;
        }
        if(max(n , q) <= 100){
            if(str[0] == 't')
                a[x] = 1 - a[x];
            for(i = 1; i <= n; i++)
                c[j][i] = c[j][i - 1] + (a[i] == 0);
            if(str[0] == 'q'){
                s = 0;
                for(i = 0; i < j; i++)
                    s += ((c[i][y - 1] - c[i][x - 1]) == 0);
                cout<<s<<"\n";
            }
        }else if( x == y - 1){
            if(str[0] == 'q'){
                s = d[x];
                if(a[x] == 1)
                    s += j - b[x];
                cout<<s<<"\n";
            }
        }else {
            if(str[0] != 't'){
                if(get(x) != get(y)){
                    cout<<0<<"\n";
                }else {
                    vector<pair<int,int>>v1 = {{-1 , 0}} , v2 = {{0 , 0}};
                    get1(x , v1);
                    get1(y , v2);
                    l = v1.size() - 1 , r = v2.size() - 1;
                    x = 0;
                    while(true){
                        if(min(l , r) == 0 || (v1[l - 1].fi != v2[r - 1].fi)){
                            x = max(v1[l- 1].se , v2[r - 1].se);
                            break;
                        }
                        l-- , r--;
                    }
                    cout<<j - x<<"\n";
                }
            }
        }
    }
}

int main(){
    TL;

    /*#ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif*/
    int t = 1;
//   cin>>t;
    while(t--)
     {
        solve();
     }
}
// Author : حسن

Compilation message

street_lamps.cpp: In function 'void solve()':
street_lamps.cpp:46:46: warning: unused variable 'f' [-Wunused-variable]
   46 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mx = 0 , mn = 1e18;
      |                                              ^
street_lamps.cpp:46:50: warning: unused variable 'k' [-Wunused-variable]
   46 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mx = 0 , mn = 1e18;
      |                                                  ^
street_lamps.cpp:46:54: warning: unused variable 'm' [-Wunused-variable]
   46 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mx = 0 , mn = 1e18;
      |                                                      ^
street_lamps.cpp:46:58: warning: unused variable 'mx' [-Wunused-variable]
   46 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mx = 0 , mn = 1e18;
      |                                                          ^~
street_lamps.cpp:46:67: warning: unused variable 'mn' [-Wunused-variable]
   46 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mx = 0 , mn = 1e18;
      |                                                                   ^~

Subtask #1
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 10584 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 52 ms 9512 KB Output is correct
2 Correct 56 ms 7524 KB Output is correct
3 Correct 66 ms 7640 KB Output is correct
4 Correct 107 ms 23012 KB Output is correct
5 Correct 82 ms 22500 KB Output is correct
6 Correct 81 ms 23308 KB Output is correct
7 Correct 85 ms 13796 KB Output is correct
8 Correct 76 ms 19172 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 62 ms 21504 KB Output is correct
6 Correct 67 ms 21580 KB Output is correct
7 Correct 78 ms 21740 KB Output is correct
8 Correct 123 ms 19320 KB Output is correct
9 Correct 62 ms 7252 KB Output is correct
10 Correct 65 ms 10324 KB Output is correct
11 Correct 73 ms 10632 KB Output is correct
12 Correct 92 ms 19532 KB Output is correct
13 Correct 119 ms 25316 KB Output is correct

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 10584 KB Output is correct
2 Incorrect 2 ms 8540 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 10584 KB Output isn't correct
2 Halted 0 ms 0 KB -