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Submission #1044634

# Submission time Handle Problem Language Result Execution time Memory
1044634 2024-08-05T11:52:51 Z vjudge1 Street Lamps (APIO19_street_lamps) C++17
20 / 100
 462 ms 22256 KB 
#include <bits/stdc++.h>
using std::cin, std::cout, std::vector, std::set, std::endl, std::string, std::map,std::pair,std::queue;

#ifdef LOCAL
#define file freopen("in.txt","r",stdin);freopen("out.txt","w",stdout);
#else
#define file ;;
#endif

#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;

template <typename T>
using Tree = tree<T, null_type, std::less<T>, rb_tree_tag, tree_order_statistics_node_update>;

#include <random>

int main(){
	file;
	int n,q;
	cin >> n >> q;
	string s;
	cin >> s;
	vector<vector<int>> hist(n+1,vector<int>(1,0));
	for(int i=1;i<=q;i++){
		string ty;
		cin >> ty;
		if(ty[0]=='q'){
			int a,b;
			cin >> a >> b;
			--a;
			--b;
			int ans = (((s[a]=='1' && hist[a].size()%2==1) || (s[a]=='0' && hist[a].size()%2==0)) ? i-hist[a].back():0);
			for(int i=(s[a]=='0')+1;i<hist[a].size();i+=2){
				ans+=hist[a][i]-hist[a][i-1];
			}
			cout << ans << endl;
		}
		else if(ty[0]=='t'){
			int a;
			cin >> a;
			hist[a-1].push_back(i);
		}

	}
	return 0;
}

Compilation message

street_lamps.cpp: In function 'int main()':
street_lamps.cpp:34:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |    for(int i=(s[a]=='0')+1;i<hist[a].size();i+=2){
      |                            ~^~~~~~~~~~~~~~~

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 360 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 245 ms 3924 KB Output is correct
2 Correct 231 ms 4180 KB Output is correct
3 Correct 244 ms 4948 KB Output is correct
4 Correct 294 ms 20716 KB Output is correct
5 Correct 326 ms 20976 KB Output is correct
6 Correct 236 ms 20452 KB Output is correct
7 Correct 427 ms 21232 KB Output is correct
8 Correct 462 ms 22256 KB Output is correct

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 360 KB Output isn't correct
2 Halted 0 ms 0 KB -