제출 #1123427

#제출 시각아이디문제언어결과실행 시간메모리
1123427irmuunGrowing Vegetable is Fun 3 (JOI19_ho_t3)C++20
60 / 100
564 ms757516 KiB
#include <bits/stdc++.h> using namespace std; #define ll long long #define pb push_back #define ff first #define ss second #define all(s) s.begin(),s.end() #define rall(s) s.rbegin(),s.rend() void chmin(int& x,int y){x=min(x,y);} const int N=401,inf=1e9; int dp[N][N][N][3]; int a[N],cnt[3]; int pos[3][N]; int main(){ ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0); int n; cin>>n; string s; cin>>s; cnt[0]=cnt[1]=cnt[2]=0; for(int i=0;i<n;i++){ if(s[i]=='R') a[i]=0; else if(s[i]=='G') a[i]=1; else a[i]=2; pos[a[i]][cnt[a[i]]]=i; cnt[a[i]]++; } for(int i=0;i<=n;i++){ for(int j=0;j<=n;j++){ for(int k=0;k<=n;k++){ for(int c=0;c<3;c++){ dp[i][j][k][c]=inf; } } } } int pre[n][3]; pre[0][0]=pre[0][1]=pre[0][2]=0; pre[0][a[0]]++; for(int i=1;i<n;i++){ for(int c=0;c<3;c++){ pre[i][c]=pre[i-1][c]+(a[i]==c?1:0); } } dp[0][0][0][0]=dp[0][0][0][1]=dp[0][0][0][2]=0; for(int i=0;i<=cnt[0];i++){ for(int j=0;j<=cnt[1];j++){ for(int k=0;k<=cnt[2];k++){ for(int c=0;c<3;c++){ if(c!=0&&i<cnt[0]){ int p=pos[0][i]; chmin(dp[i+1][j][k][0],dp[i][j][k][c]+max(pre[p][1]-j,0)+max(pre[p][2]-k,0)); } if(c!=1&&j<cnt[1]){ int p=pos[1][j]; chmin(dp[i][j+1][k][1],dp[i][j][k][c]+max(pre[p][2]-k,0)+max(pre[p][0]-i,0)); } if(c!=2&&k<cnt[2]){ int p=pos[2][k]; chmin(dp[i][j][k+1][2],dp[i][j][k][c]+max(pre[p][0]-i,0)+max(pre[p][1]-j,0)); } } } } } int ans=min({dp[cnt[0]][cnt[1]][cnt[2]][0],dp[cnt[0]][cnt[1]][cnt[2]][1],dp[cnt[0]][cnt[1]][cnt[2]][2]}); if(ans==inf){ ans=-1; } cout<<ans; }
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...