# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
55263 | IvanC | Priglavci (COCI18_priglavci) | C++17 | 4 ms | 1360 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 1e3 + 10;
const int INF = 4*1e6 + 10;
int X[MAXN],Y[MAXN],pX[MAXN],pY[MAXN],menor[MAXN][MAXN],qual[MAXN][MAXN],onibus[MAXN];
int capacidade[MAXN],par[MAXN],visitado[MAXN];
int N,M,C,K;
int bpm(int v,int L){
if(visitado[v]) return 0;
visitado[v] = 1;
for(int u = 1;u<=K;u++){
if(menor[v][u] > L) continue;
if(capacidade[u] == 0) continue;
par[v] = u;
capacidade[u]--;
return 1;
}
for(int w = 1;w<=N;w++){
int u = par[w];
if(u == -1) continue;
if(menor[v][u] > L) continue;
if(!bpm(w,L)) continue;
par[v] = u;
return 1;
}
return 0;
}
int max_match(int L){
for(int i = 1;i<=K;i++){
capacidade[i] = C;
}
for(int i = 1;i<=N;i++) par[i] = -1;
for(int i = 1;i<=N;i++){
memset(visitado,0,sizeof(visitado));
if(!bpm(i,L)) return 0;
}
return 1;
}
int sq(int x){return x*x;}
int main(){
cin >> N >> M >> C >> K;
for(int i = 1;i<=N;i++){
cin >> X[i] >> Y[i];
}
for(int i = 1;i<=M;i++){
cin >> pX[i] >> pY[i];
}
for(int i = 1;i<=K;i++){
int ki;
cin >> ki;
for(int j = 1;j<=ki;j++){
int x;
cin >> x;
onibus[x] = i;
}
}
for(int i = 1;i<=N;i++){
for(int j = 1;j<=K;j++) menor[i][j] = 2*INF;
for(int j = 1;j<=M;j++){
int distancia = sq(X[i] - pX[j]) + sq(Y[i] - pY[j]);
if(distancia < menor[i][onibus[j]]){
qual[i][onibus[j]] = j;
menor[i][onibus[j]] = distancia;
}
}
}
if(!max_match(INF)){
cout << -1 << endl;
return 0;
}
int ini = 1,fim = INF,resposta = -1,meio;
while(ini <= fim){
meio = ini + (fim - ini)/2;
if(max_match(meio)){
resposta = meio;
fim = meio - 1;
}
else{
ini = meio + 1;
}
}
max_match(resposta);
cout << resposta << endl;
for(int i = 1;i<=N;i++) cout << qual[i][par[i]] << endl;
return 0;
}
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
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