Codeforces 1137D Cooperative Game (看题解)

Cooperative Game

智商题， 感觉不太能推出来， 虽然看看证明过程是对的。

#include<bits/stdc++.h>
#define LL long long
#define fi first
#define se second
#define mk make_pair
#define PLL pair<LL, LL>
#define PLI pair<LL, int>
#define PII pair<int, int>
#define SZ(x) ((int)x.size())
#define ull unsigned long long

using namespace std;

const int N = 1e5 + 7;
const int inf = 0x3f3f3f3f;
const LL INF = 0x3f3f3f3f3f3f3f3f;
const int mod = 1000000007;
const double eps = 1e-6;
const double PI = acos(-1);

char s[100];

int getIn() {
    int n; scanf("%d", &n);
    for(int i = 1; i <= n; i++) scanf("%s", s);
    return n;
}

int main() {
    while(1) {
        printf("next 0
"); fflush(stdout);
        getIn();
        printf("next 0 1
"); fflush(stdout);
        if(getIn() == 2) break;
    }
    while(1) {
        printf("next 0 1 2 3 4 5 6 7 8 9
"); fflush(stdout);
        if(getIn() == 1) break;
    }
    printf("done
");
    fflush(stdout);
    return 0;
}

/*
*/