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Submission #429558

# Submission time Handle Problem Language Result Execution time Memory
429558 2021-06-16T06:38:10 Z 반딧불(#7598) Power plants (CPSPC17_power) C++17
35 / 100
 6000 ms 8120 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<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 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 3 ms 2636 KB Output is correct
7 Correct 3 ms 2656 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 3 ms 2636 KB Output is correct
6 Correct 3 ms 2636 KB Output is correct
7 Correct 3 ms 2656 KB Output is correct
8 Correct 3 ms 2636 KB Output is correct
9 Correct 3 ms 2636 KB Output is correct
10 Correct 305 ms 3248 KB Output is correct
11 Correct 263 ms 3284 KB Output is correct
12 Correct 266 ms 3220 KB Output is correct
13 Correct 329 ms 3364 KB Output is correct
14 Correct 486 ms 3256 KB Output is correct
15 Correct 777 ms 3404 KB Output is correct
16 Correct 365 ms 3348 KB Output is correct
17 Correct 327 ms 3312 KB Output is correct
18 Correct 442 ms 3220 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 3 ms 2636 KB Output is correct
6 Correct 3 ms 2636 KB Output is correct
7 Correct 3 ms 2656 KB Output is correct
8 Correct 3 ms 2636 KB Output is correct
9 Correct 3 ms 2636 KB Output is correct
10 Correct 305 ms 3248 KB Output is correct
11 Correct 263 ms 3284 KB Output is correct
12 Correct 266 ms 3220 KB Output is correct
13 Correct 329 ms 3364 KB Output is correct
14 Correct 486 ms 3256 KB Output is correct
15 Correct 777 ms 3404 KB Output is correct
16 Correct 365 ms 3348 KB Output is correct
17 Correct 327 ms 3312 KB Output is correct
18 Correct 442 ms 3220 KB Output is correct
19 Execution timed out 6085 ms 8120 KB Time limit exceeded
20 Halted 0 ms 0 KB -