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Submission #429559

# Submission time Handle Problem Language Result Execution time Memory
429559 2021-06-16T06:39:14 Z 반딧불(#7598) Power plants (CPSPC17_power) C++17
35 / 100
 6000 ms 7896 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

struct dat{
    int a, b; ll dist;
    dat(){}
    dat(int a, int b, ll dist): a(a), b(b), dist(dist){}
    bool operator<(const dat &r)const{
        if(dist != r.dist || a != r.a) return dist<r.dist;
        return (b - a + 100000000) % 100000000 < (r.b - r.a + 100000000) % 100000000;
    }
};

int n;
ll x[100002], y[100002];
vector<int> link[100002];
vector<dat> vec;

int pcol[100002];
int col[100002];
bool dfs(int x, int c){
    col[x] = c;
    for(auto y: link[x]){
        if(col[y] == c) return false;
        if(col[y]) continue;
        if(!dfs(y, 3-c)) return false;
    }
    return true;
}

int main(){
    scanf("%d", &n);
    for(int i=1; i<=n; i++){
        scanf("%lld %lld", &x[i], &y[i]);
    }
    for(int i=1; i<=n; i++){
        vector<dat> tvec;
        for(int j=1; j<=n; j++){
            if(i==j) continue;
            tvec.push_back(dat(i, j, (x[i] - x[j]) * (x[i] - x[j]) + (y[i] - y[j]) * (y[i] - y[j])));
        }
        sort(tvec.begin(), tvec.end());
        for(int j=0; j<(int)tvec.size() && j<3; j++) vec.push_back(tvec[j]);
    }
    sort(vec.begin(), vec.end());

    ll ans = 0;
    for(dat tmp: vec){
        link[tmp.a].push_back(tmp.b);
        link[tmp.b].push_back(tmp.a);

        ans = tmp.dist;
        bool good = 1;
        for(int i=1; i<=n; i++) pcol[i] = col[i], col[i] = 0;
        for(int i=1; i<=n; i++){
            if(!col[i]){
                if(!dfs(i, 1)){
                    good = 0;
                    break;
                }
            }
        }
        if(!good) break;
    }

    printf("%lld\n", ans);
    vector<int> a, b;
    for(int i=1; i<=n; i++) if(pcol[i] == 1) a.push_back(i); else b.push_back(i);
    printf("%d\n", (int)a.size());
    for(auto x: a) printf("%d ", x);
    puts("");
    printf("%d\n", (int)b.size());
    for(auto x: b) printf("%d ", x);
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:35:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
Main.cpp:37:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |         scanf("%lld %lld", &x[i], &y[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2636 KB Output is correct
2 Correct 3 ms 2636 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 4 ms 2636 KB Output is correct
6 Correct 4 ms 2764 KB Output is correct
7 Correct 3 ms 2636 KB Output is correct
8 Correct 3 ms 2636 KB Output is correct
9 Correct 3 ms 2636 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2636 KB Output is correct
2 Correct 3 ms 2636 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 4 ms 2636 KB Output is correct
6 Correct 4 ms 2764 KB Output is correct
7 Correct 3 ms 2636 KB Output is correct
8 Correct 3 ms 2636 KB Output is correct
9 Correct 3 ms 2636 KB Output is correct
10 Correct 304 ms 2924 KB Output is correct
11 Correct 253 ms 2876 KB Output is correct
12 Correct 286 ms 3000 KB Output is correct
13 Correct 313 ms 2972 KB Output is correct
14 Correct 453 ms 3168 KB Output is correct
15 Correct 634 ms 3044 KB Output is correct
16 Correct 345 ms 3132 KB Output is correct
17 Correct 315 ms 3072 KB Output is correct
18 Correct 430 ms 3048 KB Output is correct

Subtask #3
0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2636 KB Output is correct
2 Correct 3 ms 2636 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 4 ms 2636 KB Output is correct
6 Correct 4 ms 2764 KB Output is correct
7 Correct 3 ms 2636 KB Output is correct
8 Correct 3 ms 2636 KB Output is correct
9 Correct 3 ms 2636 KB Output is correct
10 Correct 304 ms 2924 KB Output is correct
11 Correct 253 ms 2876 KB Output is correct
12 Correct 286 ms 3000 KB Output is correct
13 Correct 313 ms 2972 KB Output is correct
14 Correct 453 ms 3168 KB Output is correct
15 Correct 634 ms 3044 KB Output is correct
16 Correct 345 ms 3132 KB Output is correct
17 Correct 315 ms 3072 KB Output is correct
18 Correct 430 ms 3048 KB Output is correct
19 Execution timed out 6072 ms 7896 KB Time limit exceeded
20 Halted 0 ms 0 KB -