Submission #1079292

#	Time	Username	Problem	Language	Result	Execution time	Memory
1079292		glupan	Catfish Farm (IOI22_fish)	C++17	9 / 100	53 ms	7272 KiB

fish

#include "fish.h"

#include <bits/stdc++.h>

#define fore(i, l, r) for(int i=int(l); i<int(r); i++)

using namespace std;

long long max_weights(int N, int M, std::vector<int> X, std::vector<int> Y,
                      std::vector<int> W) {
  long long ok=1,ok1=1;
    fore(i,0,M) {
        if(X[i] % 2)
            ok=0;
        if(X[i] > 1)
            ok1=0;
    }
    long long ans=0;
    if(ok)
      fore(i,0,M)
        ans+=W[i];
    else if(ok1) {
      long long grid[2][N+5];
      memset(grid,0,sizeof grid);
      fore(i,0,M)
        grid[X[i]][Y[i]] = W[i];
      long long sum1=0,sum2=0,temp1=0,temp2=0;
      if(N > 2) {
        fore(i,0,N) {
          sum1+=grid[0][i];
          sum2+=grid[1][i];
          if(sum1 >= sum2 and abs(sum1-sum2) >= abs(temp1-temp2)) {
            temp1=sum1;
            temp2=sum2;
          }
        }
        ans = sum2-temp2+temp1;
      } else {
        fore(i,0,N) {
          sum1+=grid[0][i];
          sum2+=grid[1][i];
        }
        return max(sum1,sum2);
      }
    } else {
      long long grid[N+5];
      memset(grid,0,sizeof grid);
      fore(i,0,M)
        grid[X[i]] = W[i];
      long long dp[N+5];
      memset(dp,0,sizeof dp);
      dp[1] = grid[0];
      fore(i,0,N) {
        dp[i] += grid[i+1];
        if(i>1)
          dp[i]+=dp[i-2];
        if(i)
          dp[i]=max(dp[i],dp[i-1]);
      }
      ans = dp[N-1];
    }
    return ans;
}

• Subtask 1: 3 / 3
• Subtask 2: 6 / 6
• Subtask 3: 0 / 9
• Subtask 4: 0 / 14
• Subtask 5: 0 / 21
• Subtask 6: 0 / 17
• Subtask 7: 0 / 14
• Subtask 8: 0 / 16