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Submission #429541

# Submission time Handle Problem Language Result Execution time Memory
429541 2021-06-16T05:49:55 Z 반딧불(#7598) Power plants (CPSPC17_power) C++17
10 / 100
 446 ms 5692 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) return dist<r.dist;
        return (b - a + 100000000) % 1000000000 < (r.b - r.a + 1000000000) % 1000000000;
    }
};

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<n-1 && j<6; 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 3 ms 2636 KB Output is correct
6 Correct 4 ms 2636 KB Output is correct
7 Correct 3 ms 2636 KB Output is correct
8 Correct 3 ms 2636 KB Output is correct
9 Correct 4 ms 2636 KB Output is correct

Subtask #2
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 3 ms 2636 KB Output is correct
6 Correct 4 ms 2636 KB Output is correct
7 Correct 3 ms 2636 KB Output is correct
8 Correct 3 ms 2636 KB Output is correct
9 Correct 4 ms 2636 KB Output is correct
10 Correct 297 ms 3004 KB Output is correct
11 Correct 240 ms 3084 KB Output is correct
12 Correct 279 ms 3080 KB Output is correct
13 Correct 321 ms 3084 KB Output is correct
14 Correct 446 ms 3104 KB Output is correct
15 Runtime error 271 ms 5692 KB Execution killed with signal 11
16 Halted 0 ms 0 KB -

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 3 ms 2636 KB Output is correct
6 Correct 4 ms 2636 KB Output is correct
7 Correct 3 ms 2636 KB Output is correct
8 Correct 3 ms 2636 KB Output is correct
9 Correct 4 ms 2636 KB Output is correct
10 Correct 297 ms 3004 KB Output is correct
11 Correct 240 ms 3084 KB Output is correct
12 Correct 279 ms 3080 KB Output is correct
13 Correct 321 ms 3084 KB Output is correct
14 Correct 446 ms 3104 KB Output is correct
15 Runtime error 271 ms 5692 KB Execution killed with signal 11
16 Halted 0 ms 0 KB -