Submission #414897

#	Time	Username	Problem	Language	Result	Execution time	Memory
414897		Ahmadsm2005	Paint By Numbers (IOI16_paint)	C++14	90 / 100	2039 ms	28716 KiB

paint

#include "paint.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
bool CAN[200003],CAN2[200003];
int8_t DP[200001][101];
vector<int>F;
string t;
bool REC(int idx,int CUR){
if(idx>=t.size()&&CUR+1==F.size())
return 1;
else if(idx>=t.size())
return 0;
if(DP[idx][CUR]+1)
return DP[idx][CUR];
DP[idx][CUR]=0;
if((F[CUR]+idx)<=t.size()){
for(int i=idx;i<idx+F[CUR];i++){
if(t[i]=='_')
goto a;
}
if((idx+F[CUR]>=t.size())||(t[idx+F[CUR]]!='X'))
if(REC(idx+F[CUR]+1,CUR+1)){
for(int i=idx;i<idx+F[CUR];i++)
CAN[i]=1;
CAN2[idx+F[CUR]]=1;
DP[idx][CUR]=1;
}
}
a:;
if(t[idx]!='X'){
if(REC(idx+1,CUR)){
CAN2[idx]=1;
DP[idx][CUR]=1;
}
}
return DP[idx][CUR];
}
string solve_puzzle(string s,vector<int>c){
F=c;
F.push_back(INT_MAX);
t=s;
string ANS;
for(int i=0;i<=200000;i++)
for(int l=0;l<=100;l++)
DP[i][l]=-1;
REC(0,0);
for(int i=0;i<s.size();i++){
if(s[i]=='.'){
if(CAN[i]&&CAN2[i])
ANS+='?';
else if(CAN[i])
ANS+='X';
else
ANS+='_';
}
else
ANS+=s[i];
}
return ANS;
}

Compilation message (stderr)

paint.cpp: In function 'bool REC(int, int)':
paint.cpp:10:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 | if(idx>=t.size()&&CUR+1==F.size())
      |    ~~~^~~~~~~~~~
paint.cpp:10:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 | if(idx>=t.size()&&CUR+1==F.size())
      |                   ~~~~~^~~~~~~~~~
paint.cpp:12:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 | else if(idx>=t.size())
      |         ~~~^~~~~~~~~~
paint.cpp:17:16: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 | if((F[CUR]+idx)<=t.size()){
      |    ~~~~~~~~~~~~^~~~~~~~~~
paint.cpp:22:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 | if((idx+F[CUR]>=t.size())||(t[idx+F[CUR]]!='X'))
      |     ~~~~~~~~~~^~~~~~~~~~
paint.cpp: In function 'std::string solve_puzzle(std::string, std::vector<int>)':
paint.cpp:48:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 | for(int i=0;i<s.size();i++){
      |             ~^~~~~~~~~

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