Submission #30763

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
30763	2017-07-26T12:15:38 Z	PrOAhMeT	Boat (APIO16_boat)	C++14	Compilation error	0 ms	0 KB

boat

#include <bits/stdc++.h>
#define mp make_pair
#define pb push_back
#define pii pair<int,int>
#define LL long long
#define st first
#define nd second
#define endl '\n'
using namespace std;

const int MAXN=505;
LL dp[MAXN][MAXN*2],n,a[MAXN],b[MAXN],mod=1e9+7;
vector<LL> po;

int main() {

	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cin>>n;
	for(int i=1;i<=n;++i) {
		cin>>a[i]>>b[i];
		po.pb(a[i]);
		po.pb(b[i]);
	}
	po.pb(0);
	po.pb(2e9);
	sort(po.begin(),po.end());
	po.resize(unique(po.begin(),po.end())-po.begin());
	for(int i=1;i<=n;++i) {
		a[i]=lower_bound(po.begin(),po.end(),a[i])-po.begin();
		b[i]=lower_bound(po.begin(),po.end(),b[i])-po.begin();
	}
	for(int j=0;j<po.size()+2;++j)
		dp[n+1][j]=1;
	for(int i=n;i>=1;--i) {
		for(int j=0;j<po.size();++j) {
			dp[i][j]=dp[i+1][j];
			if(j<=a[i]) {
				dp[i][j]+=dp[i+1][a[i]+1];
				if(dp[i][j]>=mod)
					dp[i][j]-=mod;
			}
			for(int k=max(a[i]+1,j);k<=b[i];++k) {
				dp[i][j]=(dp[i][j]+(1LL*(po[k]-po[k-1])*dp[i+1][k+1])%mod);
				if(dp[i][j]>=mod)
					dp[i][j]-=mod;
				//cout<<"doing "<<i<<" "<<k<<" "<<po[k]-po[k-1]<<" "<<dp[i+1][k]<<endl;
			}
			//cout<<i<<" "<<j<<" "<<po[j]<<" "<<dp[i][j]<<" "<<a[i]<<" "<<b[i]<<endl;
		}
	}
	cout<<(dp[1][1]-1+mod)%mod<< endl;

}

Compilation message

boat.cpp: In function 'int main()':
boat.cpp:33:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j=0;j<po.size()+2;++j)
               ^
boat.cpp:36:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0;j<po.size();++j) {
                ^
boat.cpp:43:26: error: no matching function for call to 'max(long long int, int&)'
    for(int k=max(a[i]+1,j);k<=b[i];++k) {
                          ^
In file included from /usr/include/c++/5/bits/char_traits.h:39:0,
                 from /usr/include/c++/5/ios:40,
                 from /usr/include/c++/5/istream:38,
                 from /usr/include/c++/5/sstream:38,
                 from /usr/include/c++/5/complex:45,
                 from /usr/include/c++/5/ccomplex:38,
                 from /usr/include/x86_64-linux-gnu/c++/5/bits/stdc++.h:52,
                 from boat.cpp:1:
/usr/include/c++/5/bits/stl_algobase.h:219:5: note: candidate: template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)
     max(const _Tp& __a, const _Tp& __b)
     ^
/usr/include/c++/5/bits/stl_algobase.h:219:5: note:   template argument deduction/substitution failed:
boat.cpp:43:26: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
    for(int k=max(a[i]+1,j);k<=b[i];++k) {
                          ^
In file included from /usr/include/c++/5/bits/char_traits.h:39:0,
                 from /usr/include/c++/5/ios:40,
                 from /usr/include/c++/5/istream:38,
                 from /usr/include/c++/5/sstream:38,
                 from /usr/include/c++/5/complex:45,
                 from /usr/include/c++/5/ccomplex:38,
                 from /usr/include/x86_64-linux-gnu/c++/5/bits/stdc++.h:52,
                 from boat.cpp:1:
/usr/include/c++/5/bits/stl_algobase.h:265:5: note: candidate: template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)
     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
     ^
/usr/include/c++/5/bits/stl_algobase.h:265:5: note:   template argument deduction/substitution failed:
boat.cpp:43:26: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'int')
    for(int k=max(a[i]+1,j);k<=b[i];++k) {
                          ^
In file included from /usr/include/c++/5/algorithm:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/5/bits/stdc++.h:64,
                 from boat.cpp:1:
/usr/include/c++/5/bits/stl_algo.h:3457:5: note: candidate: template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)
     max(initializer_list<_Tp> __l)
     ^
/usr/include/c++/5/bits/stl_algo.h:3457:5: note:   template argument deduction/substitution failed:
boat.cpp:43:26: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
    for(int k=max(a[i]+1,j);k<=b[i];++k) {
                          ^
In file included from /usr/include/c++/5/algorithm:62:0,
                 from /usr/include/x86_64-linux-gnu/c++/5/bits/stdc++.h:64,
                 from boat.cpp:1:
/usr/include/c++/5/bits/stl_algo.h:3463:5: note: candidate: template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)
     max(initializer_list<_Tp> __l, _Compare __comp)
     ^
/usr/include/c++/5/bits/stl_algo.h:3463:5: note:   template argument deduction/substitution failed:
boat.cpp:43:26: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
    for(int k=max(a[i]+1,j);k<=b[i];++k) {
                          ^