Submission #618184

#	Time	Username	Problem	Language	Result	Execution time	Memory
618184		rrrr10000	Paint By Numbers (IOI16_paint)	C++14	80 / 100	2090 ms	127344 KiB

paint

#include "paint.h"

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> P;
typedef vector<ll> vi;
typedef vector<vi> vvi;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<bool> vb;
#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
#define REP(i,k,n) for(ll i=(ll)(k);i<(ll)(n);i++)
#define all(a) a.begin(),a.end()
#define lb(v,k) (lower_bound(all(v),k)-v.begin())
#define fi first
#define se second
#define pb emplace_back
template<class T> void out(T a){cout<<a<<endl;}
template<class T> void outv(T v){rep(i,v.size()){if(i)cout<<' ';cout<<v[i];}cout<<endl;}
template<class T> bool chmin(T&a,T b){if(a>b){a=b;return true;}return false;}
template<class T> bool chmax(T&a,T b){if(a<b){a=b;return true;}return false;}
const ll inf=1001001001001001001;
bool check(string s,vector<int> c){
    string t;
    rep(i,c.size()){
        if(i)t+='_';
        rep(j,c[i])t+='X';
    }
    vvi dp(s.size()+1,vi(t.size()+1));
    dp[0][0]=1;
    rep(i,s.size())rep(j,t.size()+1)if(dp[i][j]){
        if(j<t.size()&&(s[i]=='.'||s[i]==t[j]))dp[i+1][j+1]=1;
        if((j==0||j==t.size())&&s[i]!='X')dp[i+1][j]=1;
        if(j>0&&s[i]!='X'&&t[j-1]=='_')dp[i+1][j]=1;
    }
    // out(s);
    // out(dp[s.size()][t.size()]);
    return dp[s.size()][t.size()];
}
std::string solve_puzzle(std::string s, std::vector<int> c) {
    string res=s;
    rep(i,s.size())if(s[i]=='.'){
        s[i]='X';
        if(!check(s,c))res[i]='_';
        else{
            s[i]='_';
            if(!check(s,c))res[i]='X';
            else res[i]='?';
        }
        s[i]='.';
    }
    return res;
}

Compilation message (stderr)

paint.cpp: In function 'bool check(std::string, std::vector<int>)':
paint.cpp:33:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |         if(j<t.size()&&(s[i]=='.'||s[i]==t[j]))dp[i+1][j+1]=1;
      |            ~^~~~~~~~~
paint.cpp:34:20: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         if((j==0||j==t.size())&&s[i]!='X')dp[i+1][j]=1;
      |                   ~^~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 3 / 3
• Subtask 3: 22 / 22
• Subtask 4: 27 / 27
• Subtask 5: 21 / 21
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10