Submission #872637

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
872637	2023-11-13 13:21:51	racsosabe	XOR Sum (info1cup17_xorsum)	C++14	100 / 100	885 ms	84716 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;
const int L = 31;
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;
 
 
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:13:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |  while(l < v.size()) {
      |        ~~^~~~~~~~~~
xorsum.cpp:15:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |   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:43:19: 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]
   43 |  for(int i = 0; i < v.size(); i++) suffix_sum.emplace_back(v[i].second);
      |                 ~~^~~~~~~~~~
xorsum.cpp:48:19: 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]
   48 |  for(int i = 0; i < v.size(); i++) {
      |                 ~~^~~~~~~~~~
xorsum.cpp: In function 'long long int get_bits(int, long long int)':
xorsum.cpp:77:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |  for(int i = 0; i < zeros_values.size(); i++) a[i] = zeros_values[i];
      |                 ~~^~~~~~~~~~~~~~~~~~~~~
xorsum.cpp:78:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   78 |  for(int i = 0; i < ones_values.size(); i++) a[i + zeros_values.size()] = ones_values[i];
      |                 ~~^~~~~~~~~~~~~~~~~~~~
xorsum.cpp: In function 'int main()':
xorsum.cpp:83:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   83 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
xorsum.cpp:86:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   86 |   scanf("%lld", a + i);
      |   ~~~~~^~~~~~~~~~~~~~~

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