Submission #1078340

#TimeUsernameProblemLanguageResultExecution timeMemory
1078340TymondStreet Lamps (APIO19_street_lamps)C++17
20 / 100
76 ms9188 KiB
#include <bits/stdc++.h> using namespace std; using ll = long long; using ld = long double; #define fi first #define se second #define vi vector<int> #define vll vector<long long> #define pii pair<int, int> #define pll pair<long long, long long> #define pb push_back #define mp make_pair #define eb emplace_back #define all(x) (x).begin(), (x).end() #define sz(x) (int)(x).size() mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); mt19937_64 rng64(chrono::steady_clock::now().time_since_epoch().count()); inline int rand(int l,int r){return uniform_int_distribution<int>(l, r)(rng);} inline ll rand(ll l,ll r){return uniform_int_distribution<ll>(l, r)(rng64);} #ifdef DEBUG auto&operator<<(auto&o,pair<auto,auto>p){return o<<"("<<p.first<<", "<<p.second<<")";} auto operator<<(auto&o,auto x)->decltype(x.end(),o){o<<"{";int i=0;for(auto e:x)o<<","+!i++<<e;return o<<"}";} #define debug(X...)cerr<<"["#X"]: ",[](auto...$){((cerr<<$<<"; "),...)<<endl;}(X) #else #define debug(...){} #endif struct custom_hash { static uint64_t splitmix64(uint64_t x) { x += 0x9e3779b97f4a7c15; x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9; x = (x ^ (x >> 27)) * 0x94d049bb133111eb; return x ^ (x >> 31); } size_t operator()(uint64_t x) const { static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count(); return splitmix64(x + FIXED_RANDOM); } }; const int MAXN = 3e5 + 7; int lst[MAXN]; int ans[MAXN]; int n, q; string s; int main(){ ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); cin >> n >> q; cin >> s; for(int i = 1; i <= q; i++){ string t; cin >> t; if(t == "query"){ int x, y; cin >> x >> y; x--; y -= 2; int res = ans[x]; if(s[x] == '1'){ res += (i - lst[x]); } cout << res << '\n'; }else{ int x; cin >> x; x--; if(s[x] == '1'){ ans[x] += (i - lst[x]); } lst[x] = i; s[x] = '1' - (s[x] - '0'); } } return 0; }
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