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Submission #124423

# Submission time Handle Problem Language Result Execution time Memory
124423 2019-07-03T10:21:50 Z Mtaylor Strange Device (APIO19_strange_device) C++14
0 / 100
 629 ms 16892 KB 
#include <bits/stdc++.h>
 
    using namespace std;
    typedef long long ll;
    typedef vector<ll> vl ;
 
    #define mp make_pair
    #define pb push_back
    #define f first
    #define s second
    #define all(v) (v).begin(),(v).end()
 
 
    const int MOD = 1000000007;
    const int N = 1000005;
    const double PI =4*atan(1);
    const double eps = 1e-7;
    
    ll  n;
    ll a,b;
    set<pair<ll,ll> > ss;
    vector<pair<ll,ll> > v;
    
 
    int main(){
        ios::sync_with_stdio(0);
        //freopen("easy.txt","r",stdin);
        cin >> n >> a >> b;
        if(a%2==0)a/=2;
        for(int i=0;i<n;i++){
            ll  x,y;
            cin >> x >> y;
            if(y-x+1>=a){
                cout << a;
                return 0;
            }
            ll z=x%a;
            ll w=y%a;
            if(x>=z){
                v.pb(mp(z,w));
            }else{
                v.pb(mp(z,a-1));
                v.pb(mp(0,w));
            }

        }
        sort(all(v));

        ll ans=v[0].s-v[0].f+1;
        ll l=v[0].s;
        for(int i=1 ;i<v.size();i++){
            if(v[i].f>l){
                ans+=v[i].s-v[i].f+1;
                l=v[i].s;
            }else{
                ans+=v[i].s-l;
                l=v[i].s;
            }
        }
        cout << ans;

        return 0;
    }

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:51:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=1 ;i<v.size();i++){
                      ~^~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 8 ms 760 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 3 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 627 ms 16892 KB Output is correct
3 Incorrect 629 ms 16856 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 627 ms 16892 KB Output is correct
3 Incorrect 629 ms 16856 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 627 ms 16892 KB Output is correct
3 Incorrect 629 ms 16856 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 8 ms 760 KB Output isn't correct
3 Halted 0 ms 0 KB -