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Submission #300066

# Submission time Handle Problem Language Result Execution time Memory
300066 2020-09-16T11:05:11 Z mohamedsobhi777 Street Lamps (APIO19_street_lamps) C++14
20 / 100
 5000 ms 9108 KB 
#include<bits/stdc++.h>

/*
#pragma GCC optimize("-Ofast")
//#pragma GCC optimize("trapv")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,sse4.2,popcnt,abm,mmx,avx2,tune=native")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-funroll-loops")*/

#define I inline void 
#define S struct 
#define vi vector<int> 
#define vii vector<pair<int,int>>
#define pii pair<int,int>
#define pll pair<ll,ll>

using namespace std ; 
using ll = long long ; 
using ld = long double ; 

const int N = 1e5 + 7 , mod = 1e9 + 7 ; 
const int inf = N ; 
// How interesting!

int n , k ; 
string s;
int a[N] ; 

string tmp[N] ; 
int ts ; 

int solve(int l , int r){
        int ret = 0 ;   
        int x = r - l + 1; 
        for(int i = 0 ;i <= ts ; i ++){
              //  cout<< tmp[i] <<" " ;
                ret+= (tmp[i].substr(l , x) == string(x , '1') ) ;
        }
       // cout<<"-----\n" ;
        //if(ts)
      //  exit(0) ;
        return ret ; 
}

int solve2(int l ,int r){
        int ret = 0 ;
       // l++ ; r -- ;
        for(int i = 0 ;i <= ts ;i++){
                vector<int> cont(n+1 , 0) , cont2(n + 1, 0) ;
                vector<pair<int,int>>v ; 
                int cnt = 0 ; 
                if(l == r){
                        ret += 2 * (tmp[i][l] -'0') ; 
                        continue; 
                }

                for(int j = 0 ;j < n ;j ++){
                        if(tmp[i][j] == '1'){
                                if(cnt){       

                                } else{
                                        cont[j]++ ; 
                                }
                                cnt++ ;
                        }else{
                                if(cnt){
                                        v.push_back({ j - cnt ,  j -1 }) ;
                                        cont2[j-1]-- ; 
                                }else{

                                }

                                cnt = 0 ; 
                        }
                }

                if(cnt){
                        v.push_back({n - cnt , n - 1 }) ;
                        cont2[n-1] -- ;
                }
              //  ret += cont[l] ; 
                for(int j = 0 ;j <= l ;j ++){
                        ret += cont[j] + cont2[j]; 
                }
               // ret-= cont2[r] ;

                for(int j = r  ; j < n ;j ++)
                        ret -= cont2[j] + cont[j];

               // cout<< ret <<"*\n" ; 
                for(auto u : v){
                        if(u.first> l && u.second < r)
                                ret += 2;
                        if(u.first > l && u.first < r)
                                ret -- ; 
                        if(u.second > l && u.second < r)
                                ret -- ;

                }
             
           /*    for(int j = 0 ;j < n ;j ++)
                        cout<< cont [j] <<" " ;
                cout<<"\n" ;
                for(int j = 0 ;j < n ;j ++)
                        cout<< cont2[j] <<" "; 
                cout<<"\n" ;*/
        }

        return ret / 2;
}

int main(){
        ios_base::sync_with_stdio(0) ;
        cin.tie(0) ; 
     /*   tmp[0] = "11011" ;
        n = tmp[0].size() ;
        cout<< solve2( 0 , 4 ) ;

        return 0 ;*/
        //freopen("in.in" , "r" , stdin) ; 
        cin >> n >> k ; 
        cin >> s ; 
        tmp[0] = s; 
        for(int i = 0 ;i < n;i ++)
                a[i] = s[i] - '0' ;

        for(int i = 0 ;i < k ;i ++){
                string t ;
                int l , r;
                cin >> t ; 

                if(t == "toggle"){
                        cin >> l ;
                        tmp[ts+1] = tmp[ts] ;ts++;
                        tmp[ts][l-1] = '1' - tmp[ts][l-1] + '0';
                        a[l] ^=1 ; 
                } else{
                        cin >> l >> r; 
                        l-- ; r-=2; 
                        if(r - l + 1 <= 2){
                                cout<< solve(l ,r) <<"\n" ; 
                        }else
                                cout<< solve2(l , r) <<"\n"; 
                        tmp[ts + 1] = tmp[ts]  ; ts ++ ;

                }
        }
        
        return 0 ; 
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3456 KB Output is correct
2 Correct 3 ms 3456 KB Output is correct
3 Correct 3 ms 3456 KB Output is correct
4 Correct 5 ms 3456 KB Output is correct
5 Correct 2 ms 3456 KB Output is correct
6 Correct 5 ms 3456 KB Output is correct
7 Correct 5 ms 3456 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5080 ms 7808 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 4480 KB Output is correct
2 Correct 1049 ms 4856 KB Output is correct
3 Correct 1939 ms 4680 KB Output is correct
4 Correct 1719 ms 4864 KB Output is correct
5 Runtime error 10 ms 9108 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3169 ms 4656 KB Output is correct
2 Correct 3263 ms 4800 KB Output is correct
3 Correct 2289 ms 4752 KB Output is correct
4 Correct 135 ms 4600 KB Output is correct
5 Runtime error 10 ms 9108 KB Execution killed with signal 11
6 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3456 KB Output is correct
2 Correct 3 ms 3456 KB Output is correct
3 Correct 3 ms 3456 KB Output is correct
4 Correct 5 ms 3456 KB Output is correct
5 Correct 2 ms 3456 KB Output is correct
6 Correct 5 ms 3456 KB Output is correct
7 Correct 5 ms 3456 KB Output is correct
8 Execution timed out 5080 ms 7808 KB Time limit exceeded
9 Halted 0 ms 0 KB -