oj.uz

Submission #376164

# Submission time Handle Problem Language Result Execution time Memory
376164 2021-03-11T02:54:40 Z Kevin_Zhang_TW Lamps (JOI19_lamps) C++17
0 / 100
 1 ms 364 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pb emplace_back
#define AI(i) begin(i), end(i)
template<class T> bool chmin(T &a, T b) { return b < a && (a = b, true); }
template<class T> bool chmax(T &a, T b) { return a < b && (a = b, true); }
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] = ", args)
void kout() { cerr << endl; }
template<class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
template<class T> void debug(T l, T r) { while (l != r) cerr << *l << " \n"[next(l) == r], ++l; }
#else
#define DE(...) 0
#define debug(...) 0
#endif
const int MAX_N = 1000010;

int n;
char a[MAX_N], b[MAX_N];
int va[MAX_N], vb[MAX_N];

int32_t main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> n >> a+1 >> b+1;
	for (int i = 1;i <= n;++i) a[i] -= '0', b[i] -= '0';
	++n;
	for (int i = n;i >= 1;--i) {
		va[i] = a[i] ^ a[i-1];
		vb[i] = b[i] ^ b[i-1];
	}

	if (accumulate(va, va+n+1, 0) == 0)
		return cout << accumulate(vb, vb + n + 1, 0) << '\n', 0;

	return -1;


}

Compilation message

lamp.cpp: In function 'int32_t main()':
lamp.cpp:25:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   25 |  cin >> n >> a+1 >> b+1;
      |              ~^~
lamp.cpp:25:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   25 |  cin >> n >> a+1 >> b+1;
      |                     ~^~

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 364 KB Execution failed because the return code was nonzero
2 Halted 0 ms 0 KB -

Subtask #2
0 / 41.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 364 KB Execution failed because the return code was nonzero
2 Halted 0 ms 0 KB -

Subtask #3
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Incorrect 0 ms 364 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 364 KB Execution failed because the return code was nonzero
2 Halted 0 ms 0 KB -