Submission #832213

#	Time	Username	Problem	Language	Result	Execution time	Memory
832213		devariaota	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1085 ms	3116 KiB

shoes

#include<bits/stdc++.h>
using namespace std;
#define ioss ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define ll long long
#define tup tuple<int, int, int>
#define pii pair<int, int>
#define fi first
#define se second
#define pub push_back
#define pob pop_back
ll count_swaps(vector<int> s) {
    ll ans = 0;
    for(int i = 0; i < s.size(); i++) {
        if(s[i] == 0) continue;
        if(s[i] < 0) {
            ll cnt = 0;
            for(int j = i+1; j < s.size(); j++) {
                if(s[j] == 0) {
                    cnt++;
                    continue;
                }

                if(s[j] == -s[i]) {
                    ans += 1ll*(j-i-1) - cnt;
                    s[i] = s[j] = 0;
                    break;
                }
            }
        }
        else {
            ll cnt = 0;
            for(int j = i+1; j < s.size(); j++) {
                if(s[j] == 0) {
                    cnt++;
                    continue;
                }

                if(s[j] == -s[i]) {
                    ans += 1ll*(j-i) - cnt;
                    s[i] = s[j] = 0;
                    break;
                }
            }
        }
    }
    return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:13:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(int i = 0; i < s.size(); i++) {
      |                    ~~^~~~~~~~~~
shoes.cpp:17:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |             for(int j = i+1; j < s.size(); j++) {
      |                              ~~^~~~~~~~~~
shoes.cpp:32:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |             for(int j = i+1; j < s.size(); j++) {
      |                              ~~^~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 20 / 20
• Subtask 6: 0 / 15