oj.uz

Submission #1025203

# Submission time Handle Problem Language Result Execution time Memory
1025203 2024-07-16T17:32:03 Z YassirSalama Horses (IOI15_horses) C++17
54 / 100
 1500 ms 13168 KB 
#include<bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define all(v) v.begin(),v.end()
#define ll long long
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 ymx=1e9;
ll pref=1;
ll solve(){
	ll suff=1;
	ll p=pref;
    for(int i=n-1;i>=0;i--){
    	suff=max(suff,1LL*y[i]);
    	if(suff>=ymx){
    		suff%=mod;
    		return (p%mod*suff%mod)%mod;
    	}
    	suff*=x[i];
    	p=(p%mod*invmod(x[i]))%mod;
    }
    return (suff%mod*p%mod)%mod;
}
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];
		pref=pref*x[i]%mod;
	}
	for(int i=0;i<n;i++){
		y[i]=Y[i];
	}
	return (int)((ll)solve()%mod);
}
 
int updateX(int pos, int val) {	
	pref=(pref%mod*invmod(x[pos])%mod)%mod;
	x[pos]=val;
	x[pos]%=mod;
	pref=(pref%mod*x[pos]%mod)%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 'long long int binpow(int, int)':
horses.cpp:27:18: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   27 |   a=(a%mod*a%mod)%mod;
      |     ~~~~~~~~~~~~~^~~~
horses.cpp: In function 'long long int solve()':
horses.cpp:46:26: warning: conversion from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' may change value [-Wconversion]
   46 |      p=(p%mod*invmod(x[i]))%mod;
      |                          ^
horses.cpp: In function 'int updateX(int, int)':
horses.cpp:65:30: warning: conversion from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' may change value [-Wconversion]
   65 |  pref=(pref%mod*invmod(x[pos])%mod)%mod;
      |                              ^
horses.cpp:69:16: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   69 |  return solve()%mod;
      |         ~~~~~~~^~~~
horses.cpp: In function 'int updateY(int, int)':
horses.cpp:75:16: warning: conversion from 'long long int' to 'int' may change value [-Wconversion]
   75 |  return solve()%mod;
      |         ~~~~~~~^~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 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 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 0 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 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 344 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 1 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 0 ms 348 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 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 0 ms 388 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 344 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 344 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 344 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 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 7 ms 460 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 3 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 66 ms 348 KB Output is correct
28 Correct 4 ms 348 KB Output is correct
29 Correct 254 ms 348 KB Output is correct
30 Correct 65 ms 348 KB Output is correct
31 Correct 245 ms 348 KB Output is correct
32 Correct 75 ms 344 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 724 ms 13152 KB Output is correct
2 Correct 72 ms 13140 KB Output is correct
3 Correct 174 ms 13064 KB Output is correct
4 Correct 105 ms 13140 KB Output is correct

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 424 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 0 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 0 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 0 ms 348 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 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 7 ms 456 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 3 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 67 ms 440 KB Output is correct
28 Correct 5 ms 348 KB Output is correct
29 Correct 254 ms 440 KB Output is correct
30 Correct 65 ms 348 KB Output is correct
31 Correct 244 ms 348 KB Output is correct
32 Correct 75 ms 344 KB Output is correct
33 Execution timed out 1552 ms 12124 KB Time limit exceeded
34 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# 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 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 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 0 ms 344 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 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 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 7 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 3 ms 456 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 67 ms 348 KB Output is correct
28 Correct 4 ms 348 KB Output is correct
29 Correct 253 ms 432 KB Output is correct
30 Correct 64 ms 348 KB Output is correct
31 Correct 245 ms 344 KB Output is correct
32 Correct 75 ms 436 KB Output is correct
33 Correct 683 ms 13168 KB Output is correct
34 Correct 79 ms 13160 KB Output is correct
35 Correct 160 ms 13136 KB Output is correct
36 Correct 100 ms 13140 KB Output is correct
37 Execution timed out 1566 ms 12020 KB Time limit exceeded
38 Halted 0 ms 0 KB -