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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#611320 | #6669. Mapa | staring | 0 | 1ms | 3852kb | C++14 | 2.6kb | 2024-10-04 20:22:28 | 2024-10-04 20:22:29 |
answer
#include<bits/stdc++.h>
using namespace std;
constexpr int N = 105, MOD = 1e9 + 7;
namespace Alice
{
int n;
int a[N][N];
int inverse(int x)
{
int y = 1, c = MOD - 2;
while(c)
{
if(c & 1)y = 1ll * y * x % MOD;
x = 1ll * x * x % MOD, c >>= 1;
}
return y;
}
void work()
{
for(int i = 0; i < n; i ++)
{
int t = i;
while(t <= n && a[t][i] == 0) t ++;
swap(a[i], a[t]);
int inv = inverse(a[i][i]);
for(int j = i; j <= n; j ++)
a[i][j] = 1ll * a[i][j] * inv % MOD;
for(int j = i + 1; j < n; j ++)
{
if(a[j][i] == 0)continue;
for(int k = n; k >= i; k --)
a[j][k] = (a[j][k] - 1ll * a[i][k] * a[j][i] % MOD + MOD) % MOD;
}
}
for(int i = n - 1; i >= 0; i --)
for(int j = i - 1; j >= 0; j --)
a[j][n] = (a[j][n] - 1ll * a[j][i] * a[i][n] % MOD + MOD) % MOD;
}
void solve()
{
scanf("%d", &n);
for(int i = 0; i < n; i ++)
{
int x, y;
scanf("%d%d", &x, &y);
int w = 1;
for(int j = 0; j < n; j ++)
{
a[i][j] = w;
w = 1ll * w * x % MOD;
}
a[i][n] = y;
}
work();
printf("%d\n", n * 30);
for(int i = 0; i < n; i ++)
{
for(int j = 0; j < 30; j ++)
printf("%d", a[i][n] >> j & 1);
}
}
}
namespace Bob
{
int n;
char str[N * 30];
int a[N];
int work(int x)
{
int w = 1, y = 0;
for(int i = 0; i < n; i ++)
{
y = (y + 1ll * a[i] * w % MOD) % MOD;
w = 1ll * w * x % MOD;
}
return y;
}
void solve()
{
int m, q;
scanf("%d%d%d", &n, &q, &m);
scanf("%s", str);
n /= 30;
for(int i = n - 1; i >= 0; i --)
{
int val = 0;
for(int j = 29; j >= 0; j --)
val = val << 1 | (str[i * 30 + j] - '0');
a[i] = val;
}
while(q --)
{
int x;
scanf("%d", &x);
printf("%d\n", work(x));
}
}
}
int main()
{
int T;
scanf("%d", &T);
if(T==1)Alice :: solve();
else Bob :: solve();
return 0;
}
Details
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Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 0
Wrong Answer
time: 1ms = 1ms + 0ms
memory: 3852kb,3808kb
input:
1 100 495528311 963488152 269613430 443544124 700489871 792354118 151890319 506569919 180452297 13229948 684464994 543841485 978085128 903812192 238355172 441140842 28061035 783291471 530823766 718942732 936853023 439421263 201361623 226633955 304644844 778868118 864860135 461524170 88300500 6959354...
output:
3000 1010001011000001001110110011100001011110110001101101001000110001110110101011111100011100101100100011001000111010010100001101011101001111001010110110110100000011110111100010111100010011100111110101100010110011000001101001111111110101100100101010001000110101001110101010100011011110100001100110100...
input:
2 100 79 3000 1010001011000001001110110011100001011110110001101101001000110001110110101011111100011100101100100011001000111010010100001101011101001111001010110110110100000011110111100010111100010011100111110101100010110011000001101001111111110101100100101010001000110101001110101010100011011110100001...
output:
214689701 676741981 59724752 548860089 835843653 834974016 458365711 983554912 571741977 507064893 55907014 364012636 786667918 368478334 405059194 83021833 338975060 256099099 411243766 834364888 152107722 125150313 506111248 132202720 192755183 890214456 545588860 524373889 668299646 735987453 110...
result:
wrong answer wrong answer on query #1: read 214689701 but expected 310305144