oj.uz

Submission #1025163

# Submission time Handle Problem Language Result Execution time Memory
1025163 2024-07-16T16:55:41 Z YassirSalama Horses (IOI15_horses) C++17
34 / 100
 1500 ms 31688 KB 
#include<bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define all(v) v.begin(),v.end()
#define ll __int128_t
template<typename T> 
void dbg_out(const T& t){
	cout<<t<<endl;
}
template<typename T,typename... Args>
void dbg_out(const T& t,const Args&... args){
	cout<<t<<" , ";
	dbg_out(args...);
}
#define dbg(...) cout<<"("<<#__VA_ARGS__<<"): ";dbg_out(__VA_ARGS__);
const ll mod=1e9+7;
const int maxn=2000;
int n;
vector<ll> x;
vector<ll> y;
ll binpow(int a,int b){
	ll ans=1;
	while(b){
		if(b&1) ans=(ans%mod*a%mod)%mod;
		b>>=1;
		a=(a%mod*a%mod)%mod;
	}
	return ans;
}
ll invmod(int a){
	return binpow(a,mod-2);
}
ll solve(){
	__int128_t ans=0;
	__int128_t ymx=0;
	for(int j=0;j<n;j++) ymx=max(ymx,y[j]);
	vector<__int128_t> suff(n+1);
    suff[n]=1;
    ll pref=1;
    for(int i=0;i<n;i++){
    	pref=(pref%mod*x[i]%mod)%mod;
    }
    for(int i=n-1;i>=0;i--){
    	suff[i]=max(suff[i+1]*x[i],suff[n]*x[i]*y[i]);
    	pref=(pref%mod)*invmod(x[i]);
    	if(suff[i]>=ymx+1){
    		return (pref%mod*suff[i]%mod)%mod;
    	}
    }
    return suff[0]%mod;
	// return 0;
}
int init(int N, int X[], int Y[]) {
	n=N;
	x.resize(n,0);
	y.resize(n,0);
	for(int i=0;i<n;i++){
		x[i]=X[i];
	}
	for(int i=0;i<n;i++){
		y[i]=Y[i];
	}
	return (int)((ll)solve()%mod);
}

int updateX(int pos, int val) {	
	x[pos]=val;
	x[pos]%=mod;
	return solve()%mod;
}

int updateY(int pos, int val) {
	y[pos]=val;
	y[pos]%=mod;
	return solve()%mod;
}


#ifdef IOI


static char _buffer[1024];
static int _currentChar = 0;
static int _charsNumber = 0;
static FILE *_inputFile, *_outputFile;

static inline int _read() {
    if (_charsNumber < 0) {
        exit(1);
    }
    if (!_charsNumber || _currentChar == _charsNumber) {
        _charsNumber = (int)fread(_buffer, sizeof(_buffer[0]), sizeof(_buffer), _inputFile);
        _currentChar = 0;
    }
    if (_charsNumber <= 0) {
        return -1;
    }
    return _buffer[_currentChar++];
}

static inline int _readInt() {
    int c, x, s;
    c = _read();
    while (c <= 32) c = _read();
    x = 0;
    s = 1;
    if (c == '-') {
        s = -1;
        c = _read();
    }
    while (c > 32) {
        x *= 10;
        x += c - '0';
        c = _read();
    }
    if (s < 0) x = -x;
    return x;
}


int main() {
	// _inputFile = fopen("horses.in", "rb");
	// _outputFile = fopen("horses.out", "w");
	
	int N; 
	cin>>N;

	int *X = (int*)malloc(sizeof(int)*(unsigned int)N);
	int *Y = (int*)malloc(sizeof(int)*(unsigned int)N);

	for (int i = 0; i < N; i++) {
		cin>>X[i];
	}

	for (int i = 0; i < N; i++) {
		cin>>Y[i];
	}	
	cout<<init(N,X,Y)<<endl;


	int M; 
	// M = _readInt();
	cin>>M;

	for (int i = 0; i < M; i++) {
		int type; 
		int pos; 
		int val; 
		cin>>type>>pos>>val;
		if (type == 1) {
			cout<<updateX(pos,val)<<endl;
			// fprintf(_outputFile,"%d\n",updateX(pos,val));
		} else if (type == 2) {
			cout<<updateY(pos,val)<<endl;
			// fprintf(_outputFile,"%d\n",updateY(pos,val));
		}
	}

	return 0;
}

#endif

Compilation message

horses.cpp: In function '__int128 binpow(int, int)':
horses.cpp:27:18: warning: conversion from '__int128' to 'int' may change value [-Wconversion]
   27 |   a=(a%mod*a%mod)%mod;
      |     ~~~~~~~~~~~~~^~~~
horses.cpp: In function '__int128 solve()':
horses.cpp:46:33: warning: conversion from '__gnu_cxx::__alloc_traits<std::allocator<__int128>, __int128>::value_type' {aka '__int128'} to 'int' may change value [-Wconversion]
   46 |      pref=(pref%mod)*invmod(x[i]);
      |                                 ^
horses.cpp:35:13: warning: unused variable 'ans' [-Wunused-variable]
   35 |  __int128_t ans=0;
      |             ^~~
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:70:16: warning: conversion from '__int128' to 'int' may change value [-Wconversion]
   70 |  return solve()%mod;
      |         ~~~~~~~^~~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:76:16: warning: conversion from '__int128' to 'int' may change value [-Wconversion]
   76 |  return solve()%mod;
      |         ~~~~~~~^~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 432 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 436 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 436 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 19 ms 508 KB Output is correct
24 Correct 9 ms 348 KB Output is correct
25 Correct 14 ms 348 KB Output is correct
26 Correct 9 ms 524 KB Output is correct
27 Correct 99 ms 484 KB Output is correct
28 Correct 10 ms 512 KB Output is correct
29 Correct 145 ms 348 KB Output is correct
30 Correct 101 ms 348 KB Output is correct
31 Correct 295 ms 348 KB Output is correct
32 Correct 198 ms 348 KB Output is correct

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1577 ms 29956 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 424 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 16 ms 512 KB Output is correct
24 Correct 8 ms 348 KB Output is correct
25 Correct 12 ms 348 KB Output is correct
26 Correct 9 ms 348 KB Output is correct
27 Correct 96 ms 348 KB Output is correct
28 Correct 8 ms 344 KB Output is correct
29 Correct 138 ms 480 KB Output is correct
30 Correct 91 ms 348 KB Output is correct
31 Correct 279 ms 344 KB Output is correct
32 Correct 191 ms 344 KB Output is correct
33 Execution timed out 1570 ms 31688 KB Time limit exceeded
34 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 360 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 432 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 15 ms 348 KB Output is correct
24 Correct 8 ms 520 KB Output is correct
25 Correct 13 ms 348 KB Output is correct
26 Correct 9 ms 348 KB Output is correct
27 Correct 93 ms 348 KB Output is correct
28 Correct 8 ms 348 KB Output is correct
29 Correct 145 ms 348 KB Output is correct
30 Correct 97 ms 348 KB Output is correct
31 Correct 272 ms 348 KB Output is correct
32 Correct 186 ms 344 KB Output is correct
33 Execution timed out 1585 ms 29996 KB Time limit exceeded
34 Halted 0 ms 0 KB -