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Submission #465245

# Submission time Handle Problem Language Result Execution time Memory
465245 2021-08-15T12:23:29 Z mario05092929 Teleporters (IOI08_teleporters) C++11
100 / 100
 363 ms 34852 KB 
#include <bits/stdc++.h>
#define x first
#define y second
#define pb push_back
#define all(v) v.begin(),v.end()
#pragma gcc optimize("O3")
#pragma gcc optimize("Ofast") 
#pragma gcc optimize("unroll-loops")
using namespace std;
const int INF = 1e9;
const int TMX = 1 << 18;
const long long llINF = 1e16;
const long long mod = 1e9+7;
const long long hashmod = 100003;
const int MAXN = 100000;
const int MAXM = 1000000;
typedef long long ll;
typedef long double ld;
typedef pair <int,int> pi;
typedef pair <ll,ll> pl;
typedef vector <int> vec;
typedef vector <pi> vecpi;
typedef long long ll;
int c[2000005],ans;
int n,k,End = 2000001;
int p[2000005];

int go(int x) {
    if(c[x]||x > End) return 0;
    c[x] = 1;
    if(p[x+1]) return go(p[x+1])+1;
    return go(x+1);
}

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> n >> k;
    for(int i = 1;i <= n;i++) {
        int x,y; cin >> x >> y;
        p[x] = y, p[y] = x;
    }
    ans = go(0);
    vec v;
    c[End] = 1;
    for(int i = 1;i <= End;i++) if(!c[i]) v.pb(go(i));
    sort(all(v));
    reverse(all(v));
    for(int i = 0;i < v.size()&&i < k;i++) ans += v[i]+2;
    k -= min((int)v.size(),k);
    cout << ans+(k/2)*4+k%2;
}

Compilation message

teleporters.cpp:6: warning: ignoring '#pragma gcc optimize' [-Wunknown-pragmas]
    6 | #pragma gcc optimize("O3")
      | 
teleporters.cpp:7: warning: ignoring '#pragma gcc optimize' [-Wunknown-pragmas]
    7 | #pragma gcc optimize("Ofast")
      | 
teleporters.cpp:8: warning: ignoring '#pragma gcc optimize' [-Wunknown-pragmas]
    8 | #pragma gcc optimize("unroll-loops")
      | 
teleporters.cpp: In function 'int main()':
teleporters.cpp:48:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |     for(int i = 0;i < v.size()&&i < k;i++) ans += v[i]+2;
      |                   ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 8140 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 8156 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 8092 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 8144 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 8140 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 8160 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 8140 KB Output is correct

Subtask #8
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 8060 KB Output is correct

Subtask #9
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 8140 KB Output is correct

Subtask #10
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 8132 KB Output is correct

Subtask #11
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 8132 KB Output is correct

Subtask #12
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 8128 KB Output is correct
2 Correct 14 ms 8344 KB Output is correct

Subtask #13
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 8140 KB Output is correct
2 Correct 15 ms 8712 KB Output is correct
3 Correct 17 ms 8688 KB Output is correct

Subtask #14
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 8324 KB Output is correct

Subtask #15
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 8312 KB Output is correct

Subtask #16
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 54 ms 10444 KB Output is correct
2 Correct 141 ms 19504 KB Output is correct

Subtask #17
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 89 ms 13604 KB Output is correct
2 Correct 195 ms 16584 KB Output is correct

Subtask #18
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 235 ms 18080 KB Output is correct
2 Correct 262 ms 18120 KB Output is correct
3 Correct 254 ms 30520 KB Output is correct

Subtask #19
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 316 ms 18120 KB Output is correct
2 Correct 345 ms 31924 KB Output is correct
3 Correct 312 ms 30388 KB Output is correct
4 Correct 352 ms 30412 KB Output is correct

Subtask #20
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 348 ms 20148 KB Output is correct
2 Correct 363 ms 20148 KB Output is correct
3 Correct 267 ms 34684 KB Output is correct
4 Correct 333 ms 34852 KB Output is correct