Submission #983073

#TimeUsernameProblemLanguageResultExecution timeMemory
983073vjudge1Street Lamps (APIO19_street_lamps)C++17
0 / 100
6 ms4892 KiB
#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);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
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