Submission #50464

#	Time	Username	Problem	Language	Result	Execution time	Memory
50464		top34051	Tents (JOI18_tents)	C++17	Compilation error	0 ms	0 KiB

tents

#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int maxn = 3005;
const ll mod = 1e9+7;
int n,m;
ll dp[maxn][maxn][maxn];
ll add(ll x, ll y) {
    return ((x+y)%mod + mod)%mod;
}
ll mul(ll x, ll y) {
    return ((x*y)%mod + mod)%mod;
}
ll comb(ll x) {
    return ((x*(x-1)/2)%mod + mod)%mod;
}
ll f(int x, int need, int free) {
    if(x==n+1) return 1;
    if(!dp[x][need][free]) {
        ll res = 0;
        //nothing
        res = add(res, f(x+1,need,free));
        //point to south
        if(free>=1) res = add(res, mul(free, f(x+1,need+1,free-1)));
        //point to north
        if(free>=1) res = add(res, mul(free, f(x+1,need,free-1)));
        if(need>=1) res = add(res, mul(need, f(x+1,need-1,free)));
        //point to west and east
        if(free>=1) res = add(res, mul(free, f(x+1,need,free-1)));
        if(free>=1) res = add(res, mul(free, f(x+1,need,free-1)));
        if(free>=2) res = add(res, mul(comb(free), f(x+1,need,free-2)));
        dp[x][need][free] = res;
    }
    return dp[x][need][free];
}
int main() {
    scanf("%d%d",&n,&m);
    printf("%lld",add(f(1,0,m),-1));
}

Compilation message (stderr)

tents.cpp: In function 'int main()':
tents.cpp:37:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&n,&m);
     ~~~~~^~~~~~~~~~~~~~
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-shim_facets.o): In function `void std::__facet_shims::(anonymous namespace)::__destroy_string<wchar_t>(void*)':
(.text._ZNSt13__facet_shims12_GLOBAL__N_116__destroy_stringIwEEvPv+0x1e): relocation truncated to fit: R_X86_64_32S against symbol `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_S_empty_rep_storage' defined in .bss._ZNSbIwSt11char_traitsIwESaIwEE4_Rep20_S_empty_rep_storageE[_ZNSbIwSt11char_traitsIwESaIwEE4_Rep20_S_empty_rep_storageE] section in /usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-wstring-inst.o)
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-shim_facets.o): In function `void std::__facet_shims::(anonymous namespace)::__destroy_string<char>(void*)':
(.text._ZNSt13__facet_shims12_GLOBAL__N_116__destroy_stringIcEEvPv+0x1e): relocation truncated to fit: R_X86_64_32S against symbol `std::string::_Rep::_S_empty_rep_storage' defined in .bss._ZNSs4_Rep20_S_empty_rep_storageE[_ZNSs4_Rep20_S_empty_rep_storageE] section in /usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-string-inst.o)
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-shim_facets.o): In function `std::__facet_shims::(anonymous namespace)::money_get_shim<wchar_t>::do_get(std::istreambuf_iterator<wchar_t, std::char_traits<wchar_t> >, std::istreambuf_iterator<wchar_t, std::char_traits<wchar_t> >, bool, std::ios_base&, std::_Ios_Iostate&, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >&) const':
(.text._ZNKSt13__facet_shims12_GLOBAL__N_114money_get_shimIwE6do_getESt19istreambuf_iteratorIwSt11char_traitsIwEES6_bRSt8ios_baseRSt12_Ios_IostateRSbIwS5_SaIwEE+0xfe): relocation truncated to fit: R_X86_64_32S against symbol `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_S_empty_rep_storage' defined in .bss._ZNSbIwSt11char_traitsIwESaIwEE4_Rep20_S_empty_rep_storageE[_ZNSbIwSt11char_traitsIwESaIwEE4_Rep20_S_empty_rep_storageE] section in /usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-wstring-inst.o)
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-shim_facets.o): In function `std::__facet_shims::(anonymous namespace)::money_get_shim<wchar_t>::do_get(std::istreambuf_iterator<wchar_t, std::char_traits<wchar_t> >, std::istreambuf_iterator<wchar_t, std::char_traits<wchar_t> >, bool, std::ios_base&, std::_Ios_Iostate&, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >&) const':
(.text._ZNKSt13__facet_shims12_GLOBAL__N_114money_get_shimIwE6do_getESt19istreambuf_iteratorIwSt11char_traitsIwEES6_bRSt8ios_baseRSt12_Ios_IostateRSbIwS5_SaIwEE+0x17b): relocation truncated to fit: R_X86_64_32S against symbol `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_S_empty_rep_storage' defined in .bss._ZNSbIwSt11char_traitsIwESaIwEE4_Rep20_S_empty_rep_storageE[_ZNSbIwSt11char_traitsIwESaIwEE4_Rep20_S_empty_rep_storageE] section in /usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-wstring-inst.o)
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-shim_facets.o): In function `std::__facet_shims::(anonymous namespace)::money_get_shim<char>::do_get(std::istreambuf_iterator<char, std::char_traits<char> >, std::istreambuf_iterator<char, std::char_traits<char> >, bool, std::ios_base&, std::_Ios_Iostate&, std::string&) const':
(.text._ZNKSt13__facet_shims12_GLOBAL__N_114money_get_shimIcE6do_getESt19istreambuf_iteratorIcSt11char_traitsIcEES6_bRSt8ios_baseRSt12_Ios_IostateRSs+0xfe): relocation truncated to fit: R_X86_64_32S against symbol `std::string::_Rep::_S_empty_rep_storage' defined in .bss._ZNSs4_Rep20_S_empty_rep_storageE[_ZNSs4_Rep20_S_empty_rep_storageE] section in /usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-string-inst.o)
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-shim_facets.o): In function `std::__facet_shims::(anonymous namespace)::money_get_shim<char>::do_get(std::istreambuf_iterator<char, std::char_traits<char> >, std::istreambuf_iterator<char, std::char_traits<char> >, bool, std::ios_base&, std::_Ios_Iostate&, std::string&) const':
(.text._ZNKSt13__facet_shims12_GLOBAL__N_114money_get_shimIcE6do_getESt19istreambuf_iteratorIcSt11char_traitsIcEES6_bRSt8ios_baseRSt12_Ios_IostateRSs+0x17b): relocation truncated to fit: R_X86_64_32S against symbol `std::string::_Rep::_S_empty_rep_storage' defined in .bss._ZNSs4_Rep20_S_empty_rep_storageE[_ZNSs4_Rep20_S_empty_rep_storageE] section in /usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-string-inst.o)
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-shim_facets.o): In function `void std::__facet_shims::__numpunct_fill_cache<char>(std::integral_constant<bool, false>, std::locale::facet const*, std::__numpunct_cache<char>*)':
(.text._ZNSt13__facet_shims21__numpunct_fill_cacheIcEEvSt17integral_constantIbLb0EEPKNSt6locale5facetEPSt16__numpunct_cacheIT_E[_ZNSt13__facet_shims21__numpunct_fill_cacheIcEEvSt17integral_constantIbLb0EEPKNSt6locale5facetEPSt16__numpunct_cacheIT_E]+0xa1): relocation truncated to fit: R_X86_64_32S against symbol `std::string::_Rep::_S_empty_rep_storage' defined in .bss._ZNSs4_Rep20_S_empty_rep_storageE[_ZNSs4_Rep20_S_empty_rep_storageE] section in /usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-string-inst.o)
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-shim_facets.o): In function `void std::__facet_shims::__numpunct_fill_cache<char>(std::integral_constant<bool, false>, std::locale::facet const*, std::__numpunct_cache<char>*)':
(.text._ZNSt13__facet_shims21__numpunct_fill_cacheIcEEvSt17integral_constantIbLb0EEPKNSt6locale5facetEPSt16__numpunct_cacheIT_E[_ZNSt13__facet_shims21__numpunct_fill_cacheIcEEvSt17integral_constantIbLb0EEPKNSt6locale5facetEPSt16__numpunct_cacheIT_E]+0x24f): relocation truncated to fit: R_X86_64_32S against symbol `std::string::_Rep::_S_empty_rep_storage' defined in .bss._ZNSs4_Rep20_S_empty_rep_storageE[_ZNSs4_Rep20_S_empty_rep_storageE] section in /usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-string-inst.o)
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-shim_facets.o): In function `void std::__facet_shims::__numpunct_fill_cache<wchar_t>(std::integral_constant<bool, false>, std::locale::facet const*, std::__numpunct_cache<wchar_t>*)':
(.text._ZNSt13__facet_shims21__numpunct_fill_cacheIwEEvSt17integral_constantIbLb0EEPKNSt6locale5facetEPSt16__numpunct_cacheIT_E[_ZNSt13__facet_shims21__numpunct_fill_cacheIwEEvSt17integral_constantIbLb0EEPKNSt6locale5facetEPSt16__numpunct_cacheIT_E]+0xa9): relocation truncated to fit: R_X86_64_32S against symbol `std::string::_Rep::_S_empty_rep_storage' defined in .bss._ZNSs4_Rep20_S_empty_rep_storageE[_ZNSs4_Rep20_S_empty_rep_storageE] section in /usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-string-inst.o)
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-shim_facets.o): In function `void std::__facet_shims::__numpunct_fill_cache<wchar_t>(std::integral_constant<bool, false>, std::locale::facet const*, std::__numpunct_cache<wchar_t>*)':
(.text._ZNSt13__facet_shims21__numpunct_fill_cacheIwEEvSt17integral_constantIbLb0EEPKNSt6locale5facetEPSt16__numpunct_cacheIT_E[_ZNSt13__facet_shims21__numpunct_fill_cacheIwEEvSt17integral_constantIbLb0EEPKNSt6locale5facetEPSt16__numpunct_cacheIT_E]+0x114): relocation truncated to fit: R_X86_64_32S against symbol `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_S_empty_rep_storage' defined in .bss._ZNSbIwSt11char_traitsIwESaIwEE4_Rep20_S_empty_rep_storageE[_ZNSbIwSt11char_traitsIwESaIwEE4_Rep20_S_empty_rep_storageE] section in /usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-wstring-inst.o)
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a(cow-shim_facets.o): In function `void std::__facet_shims::__numpunct_fill_cache<wchar_t>(std::integral_constant<bool, false>, std::locale::facet const*, std::__numpunct_cache<wchar_t>*)':
(.text._ZNSt13__facet_shims21__numpunct_fill_cacheIwEEvSt17integral_constantIbLb0EEPKNSt6locale5facetEPSt16__numpunct_cacheIT_E[_ZNSt13__facet_shims21__numpunct_fill_cacheIwEEvSt17integral_constantIbLb0EEPKNSt6locale5facetEPSt16__numpunct_cacheIT_E]+0x294): additional relocation overflows omitted from the output
collect2: error: ld returned 1 exit status