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Submission #429543

# Submission time Handle Problem Language Result Execution time Memory
429543 2021-06-16T05:52:24 Z 반딧불(#7598) Power plants (CPSPC17_power) C++17
10 / 100
 426 ms 5972 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<(int)tvec.size() && j<10; 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 2816 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 3 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 3 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 2816 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 3 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 3 ms 2636 KB Output is correct
10 Correct 293 ms 3500 KB Output is correct
11 Correct 250 ms 3404 KB Output is correct
12 Correct 266 ms 3352 KB Output is correct
13 Correct 318 ms 3620 KB Output is correct
14 Correct 426 ms 3212 KB Output is correct
15 Runtime error 246 ms 5972 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 2816 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 3 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 3 ms 2636 KB Output is correct
10 Correct 293 ms 3500 KB Output is correct
11 Correct 250 ms 3404 KB Output is correct
12 Correct 266 ms 3352 KB Output is correct
13 Correct 318 ms 3620 KB Output is correct
14 Correct 426 ms 3212 KB Output is correct
15 Runtime error 246 ms 5972 KB Execution killed with signal 11
16 Halted 0 ms 0 KB -