Submission #414910

#	Time	Username	Problem	Language	Result	Execution time	Memory
414910		Ahmadsm2005	Paint By Numbers (IOI16_paint)	C++14	100 / 100	976 ms	36424 KiB

paint

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

Compilation message (stderr)

paint.cpp: In function 'bool REC(int, int)':
paint.cpp:11:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 | if(idx>=t.size()&&CUR+1==F.size())
      |    ~~~^~~~~~~~~~
paint.cpp:11:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 | if(idx>=t.size()&&CUR+1==F.size())
      |                   ~~~~~^~~~~~~~~~
paint.cpp:13:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 | else if(idx>=t.size())
      |         ~~~^~~~~~~~~~
paint.cpp:18:16: 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]
   18 | if((F[CUR]+idx)<=t.size()){
      |    ~~~~~~~~~~~~^~~~~~~~~~
paint.cpp:21:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 | 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:42:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 | for(int i=1;i<=s.size();i++)
      |             ~^~~~~~~~~~
paint.cpp:50:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 | 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: 10 / 10