Submission #872714

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
872714	2023-11-13 15:29:38	racsosabe	XOR Sum (info1cup17_xorsum)	C++14	45 / 100	1631 ms	32448 KiB

xorsum

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include<bits/stdc++.h>
using namespace::std;
 
const int N = 1000000 + 5;
 
int n;
long long a[N];
 
vector<pair<long long, int>> parse(vector<long long> &v) {
  int l = 0;
  vector<pair<long long, int>> res;
  while(l < v.size()) {
    int r = l;
    while(r < v.size() and v[l] == v[r]) r += 1;
    res.emplace_back(v[l], r - l);
    l = r;
  }
  return res;
}
 
long long get_crossed(vector<pair<long long, int>> &a, vector<pair<long long, int>> &b, long long m) {
  int sum_a = 0, sum_b = 0;
  for(auto x : a) sum_a += x.second;
  for(auto x : b) sum_b += x.second;
  long long res = 1ll * sum_a * sum_b;
  int at = b.size() - 1;
  int sum = 0;
  for(auto x : a) {
    if(x.first == 0) continue;
    long long want = m - x.first;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

xorsum.cpp: In function 'std::vector<std::pair<long long int, int> > parse(std::vector<long long int>&)':
xorsum.cpp:12:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |  while(l < v.size()) {
      |        ~~^~~~~~~~~~
xorsum.cpp:14:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |   while(r < v.size() and v[l] == v[r]) r += 1;
      |         ~~^~~~~~~~~~
xorsum.cpp: In function 'long long int get_pairs(std::vector<std::pair<long long int, int> >, long long int)':
xorsum.cpp:42:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |  for(int i = 0; i < v.size(); i++) suffix_sum.emplace_back(v[i].second);
      |                 ~~^~~~~~~~~~
xorsum.cpp:47:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |  for(int i = 0; i < v.size(); i++) {
      |                 ~~^~~~~~~~~~
xorsum.cpp: In function 'int main()':
xorsum.cpp:74:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
xorsum.cpp:77:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |   scanf("%lld", a + i);
      |   ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 21
• Subtask 4: 38 / 38
• Subtask 5: 0 / 23