Submission #573742

#	Time	Username	Problem	Language	Result	Execution time	Memory
573742		Theo830	Art Class (IOI13_artclass)	C++17	49 / 100	105 ms	9116 KiB

artclass

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll INF = 1e9+7;
ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ll,ii>
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///Deltix Round, Spring 2021 (open for everyone, rated, Div. 1 + Div. 2)
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
uniform_int_distribution<ll> distr;
ll rnd(ll a, ll b){return distr(rng)%(b-a+1)+a;}
#include "artclass.h"
/*
#ifndef __ARTCLASS_H__
#define __ARTCLASS_H__

#ifdef __cplusplus
extern "C" {
#endif

int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]);

#ifdef __cplusplus
}
#endif

#endif
#include <stdio.h>
static int DIM[2];
static int R[500][500];
static int G[500][500];
static int B[500][500];

int main() {
    FILE *in = fopen("artclass.txt", "r");
    if(in == NULL) {
        puts("Failed to open input file (artclass.txt).");
        return 0;
    }

    if(fscanf(in, "%d%d", DIM, DIM+1) != 2) {
        printf("Line 1: H, W must be integers\n");
        return 0;
    }
    if(DIM[0] < 100 || 500 < DIM[0]) {
        printf("Line 1: 100 <= H <= 500\n");
        return 0;
    }
    if(DIM[1] < 100 || 500 < DIM[1]) {
        printf("Line 1: 100 <= W <= 500\n");
        return 0;
    }
    for(int i = 0; i< DIM[0]; i++) {
       for(int j = 0; j < DIM[1]; j++) {
           if(fscanf(in, "%d%d%d", &R[i][j], &G[i][j], &B[i][j]) != 3) {
               printf("Line %d: R[i][j], G[i][j], B[i][j] must be integers", i*DIM[1]+j+2, i, j);
               return 0;
           }
           if(R[i][j] < 0 || 255 < R[i][j]) {
               printf("Line %d: 0 <= R[%d][%d] <= 255", i*DIM[1]+j+2, i, j);
               return 0;
           }
           if(G[i][j] < 0 || 255 < G[i][j]) {
               printf("Line %d: 0 <= G[%d][%d] <= 255", i*DIM[1]+j+2, i, j);
               return 0;
           }
           if(B[i][j] < 0 || 255 < B[i][j]) {
               printf("Line %d: 0 <= B[%d][%d] <= 255", i*DIM[1]+j+2, i, j);
               return 0;
           }
       }
    }

    printf("%d\n", style(DIM[0], DIM[1], R, G, B));
    return 0;
}
*/
int style(int H, int W, int R[500][500], int G[500][500], int B[500][500]) {
    ll n = H,m = W;
    ll posa = (n * m) / 2;
    ll polla = 50000;
    ll ans;
  	set<ll>ex;
  	ll prasina = 0;
  	ll aspro = 0;
  	ll mavro = 0;
  	ll allages = 0;
    f(i,0,n){
        f(j,0,m){
            ex.insert(R[i][j] + 256 * G[i][j] + 256 * 256 * B[i][j]);
          	if(G[i][j] >= max({70,R[i][j],B[i][j]})){
              	prasina++;
            }
            if(min({G[i][j],R[i][j],B[i][j]}) >= 170){
                aspro++;
            }
            if(max({G[i][j],R[i][j],B[i][j]}) <= 70 && max({G[i][j],R[i][j],B[i][j]}) - min({G[i][j],R[i][j],B[i][j]}) <= 20){
                mavro++;
            }
            if(j != 0){
                allages += (abs(G[i][j] - G[i][j-1]) + abs(B[i][j] - B[i][j-1]) + abs(R[i][j] - R[i][j-1])) >= 100;
            }
        }
    }
    if(polla <= (ll)ex.size()){
         if(prasina >= posa && allages <= posa){
            ans = 2;
         }
         else{
            ans = 3;
         }
    }
    else{
        if(aspro >= (n * m) / 8 && mavro >= (n * m) / 32){
            ans = 1;
        }
        else{
            ans = 4;
        }
    }
    return ans;
}

• Subtask 1: 49 / 100