oj.uz

Submission #94676

# Submission time Handle Problem Language Result Execution time Memory
94676 2019-01-22T13:39:05 Z wleung_bvg Fireworks (APIO16_fireworks) C++14
100 / 100
 399 ms 44152 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/priority_queue.hpp>
using namespace std;using namespace __gnu_pbds;
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define f first
#define s second
#define all(a) (a).begin(),(a).end()
#define For(i,a,b) for(auto i=(a);i<(b);i++)
#define FOR(i,b) For(i,0,b)
#define Rev(i,a,b) for(auto i=(a);i>(b);i--)
#define REV(i,a) Rev(i,a,-1)
#define FORE(i,a) for(auto&&i:a)
template<class C>constexpr int sz(const C&c){return int(c.size());}
using ll=long long;using ld=long double;using uint=unsigned int;using ull=unsigned long long;
using pii=pair<int,int>;using pll=pair<ll,ll>;using pill=pair<int,ll>;using plli=pair<ll,int>;using pdd=pair<double,double>;using pld=pair<ld,ld>;
constexpr const char nl='\n',sp=' ';constexpr const int INT_INF=0x3f3f3f3f;constexpr const ll LL_INF=0x3f3f3f3f3f3f3f3f;
constexpr const double D_INF=numeric_limits<double>::infinity();constexpr const ld LD_INF=numeric_limits<ld>::infinity();
template<class T>constexpr const T&_min(const T&x,const T&y){return x<y?x:y;}template<class T>constexpr const T&_max(const T&x,const T&y){return x<y?y:x;}
template<class T,class...Ts>constexpr const T&_min(const T&x,const Ts&...xs){return _min(x,_min(xs...));}
template<class T,class...Ts>constexpr const T&_max(const T&x,const Ts&...xs){return _max(x,_max(xs...));}
template<class T,class...Ts>void MIN(T&x,const Ts&...xs){x=_min(x,xs...);}template<class T,class...Ts>void MAX(T&x,const Ts&...xs){x=_max(x,xs...);}
template<class T>constexpr const T&_clamp(const T&v,const T&lo,const T&hi){return v<lo?lo:hi<v?hi:v;}template<class T>void CLAMP(T&v,const T&lo,const T&hi){v=_clamp(v,lo,hi);}
template<class T,class...Args>unique_ptr<T>_make_unique(Args&&...args){return unique_ptr<T>(new T(forward<Args>(args)...));}
template<class T,class...Args>shared_ptr<T>_make_shared(Args&&...args){return shared_ptr<T>(new T(forward<Args>(args)...));}
#define min(...) _min(__VA_ARGS__)
#define max(...) _max(__VA_ARGS__)
#define clamp(...) _clamp(__VA_ARGS__)
#define make_unique _make_unique
#define make_shared _make_shared
template<class K,class H=hash<K>,class E=equal_to<K>>using hashset=gp_hash_table<K,null_type,H,E>;
template<class K,class V,class H=hash<K>,class E=equal_to<K>>using hashmap=gp_hash_table<K,V,H,E>;
template<class K,class C=less<K>>using treeset=tree<K,null_type,C,rb_tree_tag,tree_order_statistics_node_update>;
template<class K,class V,class C=less<K>>using treemap=tree<K,V,C,rb_tree_tag,tree_order_statistics_node_update>;
template<class T>using minpq=std::priority_queue<T,vector<T>,greater<T>>;template<class T>using maxpq=std::priority_queue<T,vector<T>,less<T>>;
template<class T1,class T2,class H1=hash<T1>,class H2=hash<T2>>struct pair_hash{size_t operator()(const pair<T1,T2>&p)const{return 31*H1{}(p.first)+H2{}(p.second);}};
template<class T>struct is_iterator {
    template<class U,typename enable_if<!is_convertible<U,const char*>::value,int>::type=0>constexpr static auto has_indirection(int)->decltype(*declval<U>(),bool()){return true;}
    template<class>constexpr static bool has_indirection(long){return false;}constexpr static bool value=has_indirection<T>(0);
};
seed_seq seq {
    (uint64_t)chrono::duration_cast<chrono::nanoseconds>(chrono::high_resolution_clock::now().time_since_epoch()).count(),
    (uint64_t)__builtin_ia32_rdtsc(),(uint64_t)(uintptr_t)make_unique<char>().get()
};
mt19937 rng(seq);mt19937_64 rng64(seq);const size_t RANDOM=uniform_int_distribution<size_t>(0,(numeric_limits<size_t>::max)())(rng64);
template<class T,class H=hash<T>>struct rand_hash{size_t operator()(const T&x)const{return H{}(x)^RANDOM;}};
 
constexpr const int _bufferSize=4096,_maxNumLength=128;
char _inputBuffer[_bufferSize+1],*_inputPtr=_inputBuffer,_outputBuffer[_bufferSize],_c,_sign,*_tempInputBuf=nullptr,_numBuf[_maxNumLength],_tempOutputBuf[_maxNumLength],_fill=' ';
FILE*_input=stdin,*_output=stdout,*_error=stderr;const char*_delimiter=" ";int _cur,_outputPtr=0,_numPtr=0,_precision=6,_width=0,_tempOutputPtr=0,_cnt;ull _precisionBase=1000000;
#define _peekchar() (*_inputPtr?*_inputPtr:(_inputBuffer[fread(_inputPtr=_inputBuffer,1,_bufferSize,_input)]='\0',*_inputPtr))
#define _getchar() (*_inputPtr?*_inputPtr++:(_inputBuffer[fread(_inputPtr=_inputBuffer,1,_bufferSize,_input)]='\0',*_inputPtr++))
#define _hasNext() (*_inputPtr||!feof(_input))
#define _readSignAndNum(x) do{(x)=_getchar();}while((x)<=' ');_sign=(x)=='-';if(_sign)(x)=_getchar();for((x)-='0';(_c=_getchar())>='0';(x)=(x)*10+_c-'0')
#define _readFloatingPoint(x,T) for(T _div=1.0;(_c=_getchar())>='0';(x)+=(_c-'0')/(_div*=10))
#define rc(x) do{do{(x)=_getchar();}while((x)<=' ');}while(0)
#define ri(x) do{_readSignAndNum(x);if(_sign)(x)=-(x);}while(0)
#define rd(x) do{_readSignAndNum(x);if(_c=='.')_readFloatingPoint(x,double);if(_sign)(x)=-(x);}while(0)
#define rld(x) do{_readSignAndNum(x);if(_c=='.')_readFloatingPoint(x,ld);if(_sign)(x)=-(x);}while(0)
#define rcs(x) do{_cur=0;do{_c=_getchar();}while(_c<=' ');do{(x)[_cur++]=_c;}while((_c=_getchar())>' ');(x)[_cur]='\0';}while(0)
#define rs(x) do{if(!_tempInputBuf)assert(0);rcs(_tempInputBuf);(x)=string(_tempInputBuf,_cur);}while(0)
#define rcln(x) do{_cur=0;while((_c=_getchar())!='\n'){if(_c!='\r')(x)[_cur++]=_c;}(x)[_cur]='\0';}while(0)
#define rln(x) do{if(!_tempInputBuf)assert(0);rcln(_tempInputBuf);(x)=string(_tempInputBuf,_cur);}while(0)
void setLength(int x){if(_tempInputBuf)delete[](_tempInputBuf);_tempInputBuf=new char[x+1];}
void read(int&x){ri(x);}void read(uint&x){ri(x);}void read(ll&x){ri(x);}void read(ull&x){ri(x);}void read(double&x){rd(x);}void read(ld&x){rld(x);}
void read(char&x){rc(x);}void read(char*x){rcs(x);}void read(string&x){rs(x);}void readln(char*x){rcln(x);}void readln(string&x){rln(x);}
template<class T1,class T2>void read(pair<T1,T2>&x){read(x.first);read(x.second);}template<class T>void read(complex<T>&x){T _re,_im;read(_re);read(_im);x.real(_re);x.imag(_im);}
template<class T>void read(T&x);template<class T,class...Ts>void read(T&x,Ts&&...xs);
template<class It>typename enable_if<is_iterator<It>::value>::type read(It st,It en){for(It _i=st;_i!=en;_i++)read(*_i);}
template<class It,class...Ts>typename enable_if<is_iterator<It>::value>::type read(It st,It en,Ts&&...xs){read(st,en);read(forward<Ts>(xs)...);}
template<class T>void read(T&x){for(auto&&_i:x)read(_i);}template<class T,class...Ts>void read(T&x,Ts&&...xs){read(x);read(forward<Ts>(xs)...);}
bool hasNext(){while(_hasNext()&&_peekchar()<=' ')_getchar();return _hasNext();}bool hasNextLine(){while(_hasNext()&&_peekchar()=='\r')_getchar();return _hasNext();}
void setInput(FILE*file){*_inputPtr='\0';_input=file;}void setInput(const char*s){*_inputPtr='\0';_input=fopen(s,"r");}void setInput(const string&s){*_inputPtr='\0';_input=fopen(s.c_str(),"r");}
#define _flush() do{_flushBuf();fflush(_output);}while(0)
#define _flushBuf() (fwrite(_outputBuffer,1,_outputPtr,_output),_outputPtr=0)
#define _putchar(x) (_outputBuffer[_outputPtr==_bufferSize?_flushBuf():_outputPtr]=(x),_outputPtr++)
#define _writeTempBuf(x) (_tempOutputBuf[_tempOutputPtr++]=(x))
#define _writeOutput() for(int _i=0;_i<_tempOutputPtr;_putchar(_tempOutputBuf[_i++]));_tempOutputPtr=0
#define _writeNum(x,T,digits) _cnt=0;for(T _y=(x);_y;_y/=10,_cnt++)_numBuf[_numPtr++]='0'+_y%10;for(;_cnt<digits;_cnt++)_numBuf[_numPtr++]='0';_flushNumBuf();
#define _writeFloatingPoint(x,T) ull _I=(ull)(x);ull _F=((x)-_I)*_precisionBase+(T)(0.5);if(_F>=_precisionBase){_I++;_F=0;}_writeNum(_I,ull,1);_writeTempBuf('.');_writeNum(_F,ull,_precision)
#define _checkFinite(x) if(std::isnan(x)){wcs("NaN");}else if(std::isinf(x)){wcs("Inf");}
#define _flushNumBuf() for(;_numPtr;_writeTempBuf(_numBuf[--_numPtr]))
#define _fillBuf(x) for(int _i=0;_i<(x);_i++)_putchar(_fill)
#define _flushTempBuf() int _tempLen=_tempOutputPtr;_fillBuf(_width-_tempLen);_writeOutput();_fillBuf(-_width-_tempLen)
#define wb(x) do{if(x)_writeTempBuf('1');else _writeTempBuf('0');_flushTempBuf();}while(0)
#define wc(x) do{_writeTempBuf(x); _flushTempBuf();}while(0)
#define wi(x) do{if((x)<0){_writeTempBuf('-');_writeNum(-(x),uint,1);}else{_writeNum(x,uint,1);}_flushTempBuf();}while(0)
#define wll(x) do{if((x)<0){_writeTempBuf('-');_writeNum(-(x),ull,1);}else{_writeNum(x,ull,1);}_flushTempBuf();}while(0)
#define wd(x) do{_checkFinite(x)else if((x)<0){_writeTempBuf('-');_writeFloatingPoint(-(x),double);}else{_writeFloatingPoint(x,double);}_flushTempBuf();}while(0)
#define wld(x) do{_checkFinite(x)else if((x)<0){_writeTempBuf('-');_writeFloatingPoint(-(x),ld);}else{_writeFloatingPoint(x,ld);}_flushTempBuf();}while(0)
#define wcs(x) do{int _slen=strlen(x);_fillBuf(_width-_slen);for(const char*_p=(x);*_p;_putchar(*_p++));_fillBuf(-_width-_slen);}while(0)
#define ws(x) do{_fillBuf(_width-int((x).length()));for(int _i=0;_i<int((x).length());_putchar(x[_i++]));_fillBuf(-_width-int((x).length()));}while(0)
void setPrecision(int x){_precision=x;_precisionBase=1;for(int _i=0;_i<x;_i++,_precisionBase*=10);}void setWidth(int x){_width=x;}void setFill(char x){_fill=x;}
void setDelimiter(const char*x){_delimiter=x;}void setDelimiter(const string&x){_delimiter=x.c_str();}
void writeDelimiter(){for(const char*_p=_delimiter;*_p;_putchar(*_p++));}
void write(const bool&x){wb(x);}void write(const int&x){wi(x);}void write(const uint&x){wi(x);}void write(const ll&x){wll(x);}void write(const ull&x){wll(x);}
void write(const double&x){wd(x);}void write(const ld&x){wld(x);}void write(const char&x){wc(x);}void write(const char*x){wcs(x);}void write(const string&x){ws(x);}
template<class T1,class T2>void write(const pair<T1,T2>&x){write(x.first);writeDelimiter();write(x.second);}
template<class T>void write(const complex<T>&x){write(x.real());writeDelimiter();write(x.imag());}
template<class T>void write(const T&x);template<class T,class...Ts>void write(const T&x,Ts&&...xs);
template<class It>typename enable_if<is_iterator<It>::value>::type write(It st,It en){bool _first=1;for(It _i=st;_i!=en;_i++){if(_first)_first=0;else writeDelimiter();write(*_i);}}
template<class It,class...Ts>typename enable_if<is_iterator<It>::value>::type write(It st,It en,Ts&&...xs){write(st,en);writeDelimiter();write(forward<Ts>(xs)...);}
template<class T>void write(const T&x){bool _first=1;for(auto&&_i:x){if(_first)_first=0;else writeDelimiter();write(_i);}}
template<class T,class...Ts>void write(const T&x,Ts&&...xs){write(x);writeDelimiter();write(forward<Ts>(xs)...);}
void writeln(){_putchar('\n');}template<class...Ts>void writeln(Ts&&...xs){write(forward<Ts>(xs)...);_putchar('\n');}
void flush(){_flush();}class IOManager{public:~IOManager(){flush();if(_tempInputBuf)delete[](_tempInputBuf);}};unique_ptr<IOManager>iomanager=make_unique<IOManager>();
void setOutput(FILE*file){flush();_output=file;}void setOutput(const char*s){flush();_output=fopen(s,"w");}void setOutput(const string&s){flush();_output=fopen(s.c_str(),"w");}
template<class...Ts>void debug(const Ts&...xs){FILE*_temp=_output;setOutput(_error);write(xs...);setOutput(_temp);}
template<class...Ts>void debugln(const Ts&...xs){FILE*_temp=_output;setOutput(_error);writeln(xs...);setOutput(_temp);}
void setError(FILE*file){flush();_error=file;}void setError(const char*s){flush();_error=fopen(s,"w");}void setError(const string&s){flush();_error=fopen(s.c_str(),"w");}
 
const int MAXNM = 3e5 + 5;
 
int N, M;
int P[MAXNM], C[MAXNM], inDeg[MAXNM];
ll E[MAXNM];
__gnu_pbds::priority_queue<ll, less<ll>, binomial_heap_tag> PQ[MAXNM];
 
int main() {
    // setInput("in.txt");
    // setOutput("out.txt");
    // setError("err.txt");
    read(N, M);
    fill(P, P + N + M + 1, 0);
    fill(C, C + N + M + 1, 0);
    fill(inDeg, inDeg + N + M + 1, 0);
    fill(E, E + N + M + 1, 0);
    For(i, 2, N + M + 1) {
        read(P[i], C[i]);
        inDeg[P[i]]++;
    }
    Rev(i, N + M, 1) {
        FOR(j, inDeg[i] - 1) {
            E[i] += PQ[i].top();
            PQ[i].pop();
        }
        FOR(j, 2) {
            ll x = C[i];
            if (!PQ[i].empty()) {
                x += PQ[i].top();
                PQ[i].pop();
            }
            PQ[P[i]].push(x);
        }
        if (sz(PQ[i]) > sz(PQ[P[i]])) PQ[i].swap(PQ[P[i]]);
        PQ[P[i]].join(PQ[i]);
        E[P[i]] += E[i] - C[i];
    }
    ll ans = E[1];
    FOR(j, inDeg[1]) {
        ans += PQ[1].top();
        PQ[1].pop();
    }
    writeln(ans);
    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9724 KB Output is correct
2 Correct 10 ms 9720 KB Output is correct
3 Correct 11 ms 9720 KB Output is correct
4 Correct 10 ms 9720 KB Output is correct
5 Correct 9 ms 9720 KB Output is correct
6 Correct 9 ms 9720 KB Output is correct
7 Correct 9 ms 9720 KB Output is correct
8 Correct 9 ms 9720 KB Output is correct
9 Correct 9 ms 9720 KB Output is correct
10 Correct 9 ms 9720 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9720 KB Output is correct
2 Correct 9 ms 9724 KB Output is correct
3 Correct 10 ms 9720 KB Output is correct
4 Correct 9 ms 9720 KB Output is correct
5 Correct 9 ms 9720 KB Output is correct
6 Correct 9 ms 9724 KB Output is correct
7 Correct 9 ms 9720 KB Output is correct
8 Correct 9 ms 9720 KB Output is correct
9 Correct 9 ms 9720 KB Output is correct
10 Correct 9 ms 9720 KB Output is correct
11 Correct 9 ms 9720 KB Output is correct
12 Correct 9 ms 9720 KB Output is correct
13 Correct 9 ms 9720 KB Output is correct
14 Correct 9 ms 9728 KB Output is correct
15 Correct 9 ms 9720 KB Output is correct
16 Correct 9 ms 9720 KB Output is correct
17 Correct 9 ms 9720 KB Output is correct
18 Correct 9 ms 9720 KB Output is correct
19 Correct 9 ms 9720 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9724 KB Output is correct
2 Correct 10 ms 9720 KB Output is correct
3 Correct 11 ms 9720 KB Output is correct
4 Correct 10 ms 9720 KB Output is correct
5 Correct 9 ms 9720 KB Output is correct
6 Correct 9 ms 9720 KB Output is correct
7 Correct 9 ms 9720 KB Output is correct
8 Correct 9 ms 9720 KB Output is correct
9 Correct 9 ms 9720 KB Output is correct
10 Correct 9 ms 9720 KB Output is correct
11 Correct 9 ms 9720 KB Output is correct
12 Correct 9 ms 9724 KB Output is correct
13 Correct 10 ms 9720 KB Output is correct
14 Correct 9 ms 9720 KB Output is correct
15 Correct 9 ms 9720 KB Output is correct
16 Correct 9 ms 9724 KB Output is correct
17 Correct 9 ms 9720 KB Output is correct
18 Correct 9 ms 9720 KB Output is correct
19 Correct 9 ms 9720 KB Output is correct
20 Correct 9 ms 9720 KB Output is correct
21 Correct 9 ms 9720 KB Output is correct
22 Correct 9 ms 9720 KB Output is correct
23 Correct 9 ms 9720 KB Output is correct
24 Correct 9 ms 9728 KB Output is correct
25 Correct 9 ms 9720 KB Output is correct
26 Correct 9 ms 9720 KB Output is correct
27 Correct 9 ms 9720 KB Output is correct
28 Correct 9 ms 9720 KB Output is correct
29 Correct 9 ms 9720 KB Output is correct
30 Correct 9 ms 9848 KB Output is correct
31 Correct 9 ms 9748 KB Output is correct
32 Correct 10 ms 9848 KB Output is correct
33 Correct 10 ms 9852 KB Output is correct
34 Correct 10 ms 9976 KB Output is correct
35 Correct 12 ms 9948 KB Output is correct
36 Correct 10 ms 9976 KB Output is correct
37 Correct 11 ms 9976 KB Output is correct
38 Correct 10 ms 10104 KB Output is correct
39 Correct 10 ms 10104 KB Output is correct
40 Correct 10 ms 9848 KB Output is correct
41 Correct 10 ms 9848 KB Output is correct
42 Correct 10 ms 9848 KB Output is correct
43 Correct 11 ms 10040 KB Output is correct
44 Correct 10 ms 10104 KB Output is correct
45 Correct 11 ms 10104 KB Output is correct
46 Correct 11 ms 10360 KB Output is correct
47 Correct 11 ms 10360 KB Output is correct
48 Correct 11 ms 10232 KB Output is correct
49 Correct 11 ms 10360 KB Output is correct
50 Correct 11 ms 10232 KB Output is correct
51 Correct 11 ms 10232 KB Output is correct
52 Correct 11 ms 10232 KB Output is correct
53 Correct 13 ms 10232 KB Output is correct
54 Correct 14 ms 10360 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9724 KB Output is correct
2 Correct 10 ms 9720 KB Output is correct
3 Correct 11 ms 9720 KB Output is correct
4 Correct 10 ms 9720 KB Output is correct
5 Correct 9 ms 9720 KB Output is correct
6 Correct 9 ms 9720 KB Output is correct
7 Correct 9 ms 9720 KB Output is correct
8 Correct 9 ms 9720 KB Output is correct
9 Correct 9 ms 9720 KB Output is correct
10 Correct 9 ms 9720 KB Output is correct
11 Correct 9 ms 9720 KB Output is correct
12 Correct 9 ms 9724 KB Output is correct
13 Correct 10 ms 9720 KB Output is correct
14 Correct 9 ms 9720 KB Output is correct
15 Correct 9 ms 9720 KB Output is correct
16 Correct 9 ms 9724 KB Output is correct
17 Correct 9 ms 9720 KB Output is correct
18 Correct 9 ms 9720 KB Output is correct
19 Correct 9 ms 9720 KB Output is correct
20 Correct 9 ms 9720 KB Output is correct
21 Correct 9 ms 9720 KB Output is correct
22 Correct 9 ms 9720 KB Output is correct
23 Correct 9 ms 9720 KB Output is correct
24 Correct 9 ms 9728 KB Output is correct
25 Correct 9 ms 9720 KB Output is correct
26 Correct 9 ms 9720 KB Output is correct
27 Correct 9 ms 9720 KB Output is correct
28 Correct 9 ms 9720 KB Output is correct
29 Correct 9 ms 9720 KB Output is correct
30 Correct 9 ms 9848 KB Output is correct
31 Correct 9 ms 9748 KB Output is correct
32 Correct 10 ms 9848 KB Output is correct
33 Correct 10 ms 9852 KB Output is correct
34 Correct 10 ms 9976 KB Output is correct
35 Correct 12 ms 9948 KB Output is correct
36 Correct 10 ms 9976 KB Output is correct
37 Correct 11 ms 9976 KB Output is correct
38 Correct 10 ms 10104 KB Output is correct
39 Correct 10 ms 10104 KB Output is correct
40 Correct 10 ms 9848 KB Output is correct
41 Correct 10 ms 9848 KB Output is correct
42 Correct 10 ms 9848 KB Output is correct
43 Correct 11 ms 10040 KB Output is correct
44 Correct 10 ms 10104 KB Output is correct
45 Correct 11 ms 10104 KB Output is correct
46 Correct 11 ms 10360 KB Output is correct
47 Correct 11 ms 10360 KB Output is correct
48 Correct 11 ms 10232 KB Output is correct
49 Correct 11 ms 10360 KB Output is correct
50 Correct 11 ms 10232 KB Output is correct
51 Correct 11 ms 10232 KB Output is correct
52 Correct 11 ms 10232 KB Output is correct
53 Correct 13 ms 10232 KB Output is correct
54 Correct 14 ms 10360 KB Output is correct
55 Correct 11 ms 10616 KB Output is correct
56 Correct 28 ms 12536 KB Output is correct
57 Correct 43 ms 14456 KB Output is correct
58 Correct 73 ms 15736 KB Output is correct
59 Correct 86 ms 17912 KB Output is correct
60 Correct 101 ms 19576 KB Output is correct
61 Correct 106 ms 20984 KB Output is correct
62 Correct 108 ms 22140 KB Output is correct
63 Correct 144 ms 24336 KB Output is correct
64 Correct 186 ms 25236 KB Output is correct
65 Correct 52 ms 15736 KB Output is correct
66 Correct 54 ms 15736 KB Output is correct
67 Correct 55 ms 15992 KB Output is correct
68 Correct 115 ms 29948 KB Output is correct
69 Correct 162 ms 30072 KB Output is correct
70 Correct 175 ms 30200 KB Output is correct
71 Correct 174 ms 43768 KB Output is correct
72 Correct 170 ms 43808 KB Output is correct
73 Correct 175 ms 44040 KB Output is correct
74 Correct 175 ms 44024 KB Output is correct
75 Correct 202 ms 43784 KB Output is correct
76 Correct 218 ms 43868 KB Output is correct
77 Correct 213 ms 42872 KB Output is correct
78 Correct 231 ms 43128 KB Output is correct
79 Correct 399 ms 44152 KB Output is correct