Submission #575392

#	Time	Username	Problem	Language	Result	Execution time	Memory
575392		AJ00	Palembang Bridges (APIO15_bridge)	C++14	0 / 100	2 ms	468 KiB

bridge

#include <bits/stdc++.h>

using namespace std;
#define int long long
int n;
const int MOD = 1000000007;
const int INF = 1e18;
int s[100001],t[100001];
vector<int> v,cons;
signed main()
{
    //freopen("problemname.in", "r", stdin);
    //freopen("problemname.out", "w", stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int tc=1,q,k,m,c; 
    //cin >> tc;
    for (int poppo = 1; poppo <= tc; poppo++){
        //cout << "Case #" << poppo << ": "; 
        int n,k;
        int ans = 0;
        char ch1,ch2;
        cin >> k >> n;
        for (int i = 0; i < n; i++){
            cin >> ch1 >> s[i] >> ch2 >> t[i];
            if (ch1 == ch2){
                ans += abs(s[i]-t[i]);
            }
            else {
                v.push_back(s[i]);
                v.push_back(t[i]);
                cons.push_back(i);
            }
        }
        ans += (int)cons.size();
        sort(v.begin(),v.end());
        // 0,1,2,3,.... 2n
        int bridge = v[((v.size()-1)/2)];
        for (int i = 0; i < cons.size(); i++){
            ans += abs(s[cons[i]]-bridge) + abs(t[cons[i]]-bridge);
        }
        cout << ans << "\n";
    }
    return 0;
}

Compilation message (stderr)

bridge.cpp: In function 'int main()':
bridge.cpp:39:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |         for (int i = 0; i < cons.size(); i++){
      |                         ~~^~~~~~~~~~~~~
bridge.cpp:16:14: warning: unused variable 'q' [-Wunused-variable]
   16 |     int tc=1,q,k,m,c;
      |              ^
bridge.cpp:16:16: warning: unused variable 'k' [-Wunused-variable]
   16 |     int tc=1,q,k,m,c;
      |                ^
bridge.cpp:16:18: warning: unused variable 'm' [-Wunused-variable]
   16 |     int tc=1,q,k,m,c;
      |                  ^
bridge.cpp:16:20: warning: unused variable 'c' [-Wunused-variable]
   16 |     int tc=1,q,k,m,c;
      |                    ^

• Subtask 1: 0 / 8
• Subtask 2: 0 / 14
• Subtask 3: 0 / 9
• Subtask 4: 0 / 32
• Subtask 5: 0 / 37