Submission #983073

#	Time	Username	Problem	Language	Result	Execution time	Memory
983073		vjudge1	Street Lamps (APIO19_street_lamps)	C++17	0 / 100	6 ms	4892 KiB

street_lamps

#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] ,  d[N];
ll  c[109][109];

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;
    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) ;
    }
    for(j = 1; j <= q;j ++){
        cin>>str>>x;
        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'){
                cin>>y;
                s = 0;
                for(i = 0; i < j; i++)
                    s += ((c[i][y - 1] - c[i][x - 1]) == 0);
                cout<<s<<"\n";
            }
        }else {
            if(str[0] == 't'){
                a[x] = 1 - a[x];
                if(a[x] == 0)
                    d[x] += j - b[x];
                b[x] = j;
            }
            if(str[0] == 'q'){
                cin>>y;
                s = d[x];
                if(a[x] == 1)
                    s += j - b[x];
                cout<<s<<"\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 (stderr)

street_lamps.cpp: In function 'void solve()':
street_lamps.cpp:27:23: warning: unused variable 'l' [-Wunused-variable]
   27 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mx = 0 , mn = 1e18;
      |                       ^
street_lamps.cpp:27:26: warning: unused variable 'r' [-Wunused-variable]
   27 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mx = 0 , mn = 1e18;
      |                          ^
street_lamps.cpp:27:46: warning: unused variable 'f' [-Wunused-variable]
   27 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mx = 0 , mn = 1e18;
      |                                              ^
street_lamps.cpp:27:50: warning: unused variable 'k' [-Wunused-variable]
   27 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mx = 0 , mn = 1e18;
      |                                                  ^
street_lamps.cpp:27:54: warning: unused variable 'm' [-Wunused-variable]
   27 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mx = 0 , mn = 1e18;
      |                                                      ^
street_lamps.cpp:27:58: warning: unused variable 'mx' [-Wunused-variable]
   27 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mx = 0 , mn = 1e18;
      |                                                          ^~
street_lamps.cpp:27:67: warning: unused variable 'mn' [-Wunused-variable]
   27 |     ll n , q , i , j ,l ,r , x , y , s = 0 , f , k , m , mx = 0 , mn = 1e18;
      |                                                                   ^~
street_lamps.cpp: In function 'int main()':
street_lamps.cpp:72:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
street_lamps.cpp:73:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20